Common Weakness Enumeration
CWE-59
AllowedImproper Link Resolution Before File Access ('Link Following')
Abstraction: Base · Status: Draft
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
862 vulnerabilities reference this CWE, most recent first.
CVE-2026-87910 (GCVE-0-2026-87910)
Vulnerability from cvelistv5 – Published: 2026-09-11 17:27 – Updated: 2026-10-22 00:31
VLAI
EPSS
VEX
Title
tarfile hardlink fallback ignores custom extraction filter rejection via None
Summary
When tarfile extracts a link on a system that doesn't support links, it falls back to extracting a member from the archive. In this case, the filter function is run twice: once for the extracted member, and once with name set to the location of the link. For one of the calls, the return value was ignored. Instead, the member should be skipped if either call returns None.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 19:23 UTC
Assigner
PSF
CNA
References
12 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.22
(python)
Affected: 3.11.0 , < 3.11.17 (python) Affected: 3.12.0 , < 3.12.15 (python) Affected: 3.13.0 , < 3.13.16 (python) Affected: 3.14.0 , < 3.14.9 (python) Affected: 3.15.0a1 , < 3.15.0rc3 (python) |
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CVE-2026-87799 (GCVE-0-2026-87799)
Vulnerability from cvelistv5 – Published: 2026-09-28 13:22 – Updated: 2026-09-29 03:55
VLAI
EPSS
VEX
Title
Arbitrary file write on LXD host via symlink in migration stream
Summary
Improper link resolution in the migration receive path in Canonical LXD versions 4.0 and later (fixed in 4.0.14, 5.0.10, 5.21.8 and 6.10) on Linux allows an authenticated client that can create instances or custom storage volumes in a project, or a malicious migration source server, to write attacker-controlled files to arbitrary paths on the target host as root, leading to full host compromise. The attacker does this with a crafted rsync or btrfs send stream that plants a symlink in the transferred volume, such as rootfs or root.img, and then writes through it.
Severity
9.9 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 00:00 UTC
CWE
- CWE-59 - Improper link resolution before file access ('link following')
Assigner
canonical
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/canonical/lxd/security/advisor… | vendor-advisory |
Impacted products
Date Public
2026-09-25 03:00
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CVE-2026-87798 (GCVE-0-2026-87798)
Vulnerability from cvelistv5 – Published: 2026-09-28 13:22 – Updated: 2026-09-28 16:32
VLAI
EPSS
VEX
Title
LXD client recursive file pull allows directory escape via malicious VM agent
Summary
Improper link resolution in the recursive file pull feature of the LXD CLI client in Canonical LXD versions 4.0.2 up to 6.9 (fixed in 4.0.14, 5.0.10 and 5.21.8) on Linux allows an attacker with root access inside a virtual machine to write attacker-controlled files or directory trees to arbitrary paths on the client host, with the operator's privileges. The attacker does this by using a modified lxd-agent that returns inconsistent SFTP directory listings and Lstat results.
Severity
5.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 14:04 UTC
CWE
- CWE-59 - Improper link resolution before file access ('link following')
Assigner
canonical
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/canonical/lxd/security/advisor… | vendor-advisory |
Impacted products
Date Public
2026-09-25 03:00
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CVE-2026-87766 (GCVE-0-2026-87766)
Vulnerability from cvelistv5 – Published: 2026-09-09 08:34 – Updated: 2026-11-02 13:30
VLAI
EPSS
VEX
Title
Bubblewrap: bubblewrap: symlink traversal via /oldroot allows writing files outside sandbox during setup
Summary
A flaw was found in bubblewrap. During sandbox setup, creating files or directories under the new root can follow a parent symlink onto the host via /oldroot, writing attacker-chosen paths outside the sandbox as the launching user. This happens before the sandboxed process starts. This issue is GHSA-pxhw-h44j-8pfx. It is fixed in bubblewrap 0.12.0.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 14:03 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access
Assigner
redhat
CNA
References
18 references
Impacted products
14 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:0.10.0-5.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:0.10.0-3.el10_0.4 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:0.4.0-3.el8_10 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:0.4.0-3.el8_4 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.4::baseos cpe:/o:redhat:rhel_eus_long_life:8.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
0:0.4.0-3.el8_4 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.4::baseos cpe:/o:redhat:rhel_eus_long_life:8.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
0:0.4.0-3.el8_6 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.6::baseos cpe:/o:redhat:rhel_eus_long_life:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On |
Unaffected:
0:0.4.0-3.el8_6 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.6::baseos cpe:/o:redhat:rhel_eus_long_life:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
0:0.4.0-3.el8_8 , < *
(rpm)
cpe:/o:redhat:rhel_e4s:8.8::baseos cpe:/o:redhat:rhel_tus:8.8::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
0:0.4.0-3.el8_8 , < *
(rpm)
cpe:/o:redhat:rhel_e4s:8.8::baseos cpe:/o:redhat:rhel_tus:8.8::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:0.6.3-1.el9_8.1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:0.4.1-7.el9_2.1 , < *
(rpm)
cpe:/o:redhat:rhel_e4s:9.2::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions |
Unaffected:
0:0.4.1-7.el9_4.1 , < *
(rpm)
cpe:/o:redhat:rhel_e4s:9.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:0.4.1-8.el9_6.1 , < *
(rpm)
cpe:/o:redhat:rhel_eus:9.6::baseos |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1
|
Date Public
2026-09-09 00:00
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CVE-2026-87008 (GCVE-0-2026-87008)
Vulnerability from cvelistv5 – Published: 2026-11-05 20:13 – Updated: 2026-11-05 21:03
VLAI
EPSS
VEX
Title
Code Graph RAG structural tools follow out-of-root symlinks
Summary
Code Graph RAG is an AI-powered knowledge graph and retrieval system for querying, understanding, and editing multi-language codebases. Prior to 0.0.589, AstGrepService in codebase_rag/tools/ast_grep_service.py enumerates files beneath project_root and relies on should_skip_path in codebase_rag/utils/path_utils.py to classify them, but the containment check operates on unresolved lexical paths. A symbolic link planted inside an analyzed repository can therefore reference a file outside the configured root while still appearing in scope. The structural_search tool follows the link and discloses readable content without an approval gate, while structural_replace with dry_run=False follows it and overwrites writable content; the MCP path invokes structural replacement without the agent-loop approval control. An attacker who causes a victim to analyze a repository containing such a link can read credentials, keys, environment files, or sibling source and can modify files accessible to the code-graph-rag process. This issue is fixed in version 0.0.589.
Severity
7.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 21:03 UTC
CWE
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/vitali87/code-graph-rag/securi… | x_refsource_CONFIRM |
| https://github.com/vitali87/code-graph-rag/commit… | x_refsource_MISC |
| https://github.com/vitali87/code-graph-rag/releas… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| vitali87 | code-graph-rag |
Affected:
< 0.0.589
|
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CVE-2026-86861 (GCVE-0-2026-86861)
Vulnerability from cvelistv5 – Published: 2026-09-17 15:30 – Updated: 2026-09-17 19:18
VLAI
EPSS
VEX
Title
pgAdmin 4: File Manager save_file writes through a symbolic link planted after the containment check
Summary
pgAdmin 4's File Manager save_file endpoint, which backs saving from the Query Tool and ERD, validated the requested path with Filemanager.check_access_permission() and then opened the file for writing with a plain open() call. CVE-2026-7819 had previously hardened the separate file upload path by opening its target with O_NOFOLLOW, so that the kernel refuses to follow a symbolic link at the final path component, but save_file was left on an unprotected open(). A symbolic link already present when the check ran was rejected by the check itself; the remaining exposure was a link substituted at the final path component in the interval between the check and the write, at which point the write followed the link and landed outside the user's storage directory, creating or overwriting an arbitrary file as the operating-system account running pgAdmin.
Exploitation requires the ability to create or replace a symbolic link inside the requesting user's storage directory. pgAdmin exposes no interface that creates symbolic links, so this requires filesystem access to the pgAdmin host or to a shared or network-mounted storage backend, together with winning the timing window. The reporter did not achieve a write against a released version, having attempted approximately 63,000 racing requests without success; the reported defect is the uncovered write path rather than a demonstrated sandbox escape.
The fix routes save_file's write through the same O_NOFOLLOW-protected helper already used by the upload path, so both File Manager write sinks carry identical kernel-enforced protection, and reports a symbolic-link refusal explicitly instead of surfacing the underlying system error text. Note that files created by save_file are now given mode 0600, inheriting the behaviour introduced for uploads. The protection covers the final path component; substitution of an intermediate directory component is not addressed by this change.
This issue affects pgAdmin 4: from the introduction of the containment check in the File Manager save path before 9.18.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 19:18 UTC
CWE
Assigner
PostgreSQL
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pgadmin-org/pgadmin4/issues/10385 | issue-tracking |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| pgadmin.org | pgAdmin 4 |
Affected:
0 , < 9.18
(custom)
|
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CVE-2026-86578 (GCVE-0-2026-86578)
Vulnerability from cvelistv5 – Published: 2026-11-10 04:44 – Updated: 2026-11-10 04:44
VLAI
EPSS
VEX
Title
Link Following Vulnerability in Hitachi Dynamic Link Manager for Windows
Summary
Link Following Vulnerability in Hitachi Dynamic Link Manager for Windows.
This issue affects Hitachi Dynamic Link Manager for Windows: from 5.0.0-03 before 9.0.4-01.
Severity
7.3 (High)
CWE
- CWE-59 - Improper link resolution before file access ('link following')
Assigner
Hitachi
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://www.hitachi.com/products/it/software/secu… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Hitachi | Hitachi Dynamic Link Manager for Windows |
Affected:
5.0.0-03 , < 9.0.4-01
(custom)
|
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CVE-2026-86469 (GCVE-0-2026-86469)
Vulnerability from cvelistv5 – Published: 2026-09-07 16:00 – Updated: 2026-11-06 07:45
VLAI
EPSS
VEX
Title
Glib2: toctou symlink race in `g_file_create_replace_destination` fallback path
Summary
A flaw was found in GLib2. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION and creating the .goutputstream-XXXXXX temporary file fails, the library unlinks the destination and recreates it without exclusive creation or symlink protection. A local attacker who can write to the destination directory can win that race and redirect the write to another file.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 12:46 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access
Assigner
redhat
CNA
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-86469 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2473839 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/GNOME/glib/-/blob/main/g… | |
| https://gitlab.gnome.org/GNOME/glib/-/work_items/4044 |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/a:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:rhel_els:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:rhel_els:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/a:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/a:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1
|
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
|
| Red Hat | Red Hat OpenShift Container Platform 5 |
cpe:/a:redhat:openshift:5
|
Date Public
2026-09-07 14:47
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CVE-2026-86424 (GCVE-0-2026-86424)
Vulnerability from cvelistv5 – Published: 2026-09-07 12:53 – Updated: 2026-10-29 21:17
VLAI
EPSS
VEX
Title
ImageMagick before 7.1.2-30 Path Traversal via TOCTOU Symlink Race
Summary
ImageMagick before 7.1.2-30 and 6.9.13-55 contains a time-of-check-time-of-use (TOCTOU) vulnerability in the video decoder that allows attackers to bypass path policy write restrictions via symlink swaps. An attacker can replace a symlink between policy validation (check-time) and the file write operation (use-time) to write to policy-denied locations.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 17:41 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ImageMagick/ImageMagick/securi… | vendor-advisory |
| https://www.vulncheck.com/advisories/imagemagick-… | third-party-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ImageMagick | ImageMagick |
Affected:
7.0.0 , < 7.1.2-30
(semver)
Unaffected: 7.1.2-30 (semver) |
|
| ImageMagick | ImageMagick |
Affected:
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(semver)
Unaffected: 6.9.13-55 (semver) |
Date Public
2026-08-23 00:00
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CVE-2026-86422 (GCVE-0-2026-86422)
Vulnerability from cvelistv5 – Published: 2026-09-07 12:53 – Updated: 2026-10-29 21:17
VLAI
EPSS
VEX
Title
ImageMagick before 7.1.2-30 Path Policy TOCTOU Symlink Race
Summary
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 14:19 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ImageMagick/ImageMagick/securi… | vendor-advisory |
| https://www.vulncheck.com/advisories/imagemagick-… | third-party-advisory |
Impacted products
2 products
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|---|---|---|---|
| ImageMagick | ImageMagick |
Affected:
7.0.0 , < 7.1.2-30
(semver)
Unaffected: 7.1.2-30 (semver) |
|
| ImageMagick | ImageMagick |
Affected:
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(semver)
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2026-08-23 00:00
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"lang": "en",
"type": "CWE"
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"references": [
{
"name": "GitHub Security Advisory (GHSA-x8g2-7r3w-h44p)",
"tags": [
"vendor-advisory"
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"url": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-x8g2-7r3w-h44p"
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{
"name": "VulnCheck Advisory: ImageMagick before 7.1.2-30 Path Policy TOCTOU Symlink Race",
"tags": [
"third-party-advisory"
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"url": "https://www.vulncheck.com/advisories/imagemagick-before-7.1.2-30-path-policy-toctou-symlink-race"
}
],
"title": "ImageMagick before 7.1.2-30 Path Policy TOCTOU Symlink Race",
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"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-86422",
"datePublished": "2026-09-07T12:53:45.242Z",
"dateReserved": "2026-09-07T12:33:13.368Z",
"dateUpdated": "2026-10-29T21:17:05.093Z",
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Mitigation MIT-48.1
Architecture and Design
Strategy: Separation of Privilege
- Follow the principle of least privilege when assigning access rights to entities in a software system.
- Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
CAPEC-132: Symlink Attack
An adversary positions a symbolic link in such a manner that the targeted user or application accesses the link's endpoint, assuming that it is accessing a file with the link's name.
CAPEC-17: Using Malicious Files
An attack of this type exploits a system's configuration that allows an adversary to either directly access an executable file, for example through shell access; or in a possible worst case allows an adversary to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
CAPEC-35: Leverage Executable Code in Non-Executable Files
An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.
CAPEC-76: Manipulating Web Input to File System Calls
An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.