Common Weakness Enumeration
CWE-61
AllowedUNIX Symbolic Link (Symlink) Following
Abstraction: Compound · Status: Incomplete
The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.
190 vulnerabilities reference this CWE, most recent first.
CVE-2026-124584 (GCVE-0-2026-124584)
Vulnerability from cvelistv5 – Published: 2026-11-09 08:45 – Updated: 2026-11-09 10:19
VLAI
EPSS
VEX
Title
wummel patool Gzip Extraction fileutil.py extract_gzip symlink
Summary
A vulnerability has been found in wummel patool 4.1.0. This vulnerability affects the function extract_gzip of the file patoolib/fileutil.py of the component Gzip Extraction Handler. The manipulation leads to symlink following. Local access is required to approach this attack. The researcher claims to have submitted a GHSA on the repository of the project.
Severity
Assigner
VulDB
CNA
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/433008 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/433008/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-124584 | third-party-advisory |
| https://vuldb.com/submit/1038992 | third-party-advisory |
| https://github.com/wummel/patool/security/advisor… | broken-link |
| https://github.com/wummel/patool/ | product |
Impacted products
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CVE-2026-123962 (GCVE-0-2026-123962)
Vulnerability from cvelistv5 – Published: 2026-11-06 17:11 – Updated: 2026-11-06 21:44
VLAI
EPSS
VEX
Summary
In FreedomBox before 26.15, unprivileged user accounts can read/write files for which they lack permissions by setting the authorized_keys file to be a symlink. NOTE: FreedomBox is a Debian Pure Blend, which means that it distributes its software through Debian repositories.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 21:43 UTC
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
mitre
CNA
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Debian | FreedomBox |
Affected:
0 , < 26.15
(custom)
cpe:2.3:a:debian:freedombox:*:*:*:*:*:*:*:* |
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CVE-2026-121747 (GCVE-0-2026-121747)
Vulnerability from cvelistv5 – Published: 2026-11-04 21:30 – Updated: 2026-11-09 20:45
VLAI
EPSS
VEX
Title
nvm prints the contents of any readable file through a symlinked .nvmrc
Summary
Node Version Manager (nvm) is a POSIX-compliant shell function for managing multiple node.js versions. In versions 0.2.0 through 0.40.8, nvm does not check whether `.nvmrc` is a symbolic link. A repository or archive that ships `.nvmrc` as a symlink to another file (for example `../../.npmrc`, or `/proc/self/environ` on Linux) makes a plain `nvm use`, `nvm install`, `nvm which`, `nvm exec`, `nvm run`, or `nvm-exec` read that file and print its contents in the invalid-`.nvmrc` message (even with `--silent`) or, for a one-line file, in the `Found ... with version <...>` message; with the README's zsh `load-nvmrc` or bash `cdnvm` hook installed, entering the directory is enough. nvm sends the content nowhere; the attacker learns it only where they can see the victim's output, such as a CI log for a contributed branch. Version 0.41.0 still follows a symlinked `.nvmrc`, so deliberate links to another version file keep working, but never prints its content, and accepts it only if it contains a version or the name of an existing alias; the README's bash `cdnvm` hook, which read `.nvmrc` itself, now gets the version from nvm, so users of that hook must also update their copy of it.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 20:45 UTC
CWE
Assigner
harborist
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/nvm-sh/nvm/security/advisories… | vendor-advisory |
| https://github.com/nvm-sh/nvm/commit/67268ebcb6e1… | patch |
| https://github.com/nvm-sh/nvm/commit/c314f1cbb3c3… | patch |
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CVE-2026-121520 (GCVE-0-2026-121520)
Vulnerability from cvelistv5 – Published: 2026-11-03 22:11 – Updated: 2026-11-06 19:31
VLAI
EPSS
VEX
Title
Malicious client could set xattr value outside of BuildKit state directory
Summary
In BuildKit versions prior to v0.34.1, a malicious client with access to the BuildKit control APIs can submit a build request that sets an extended attribute on a file outside the BuildKit state directory. Extended attributes in the trusted. or security. namespaces may also be set, potentially giving a program on the host elevated privileges. This issue affects build services that accept build requests from untrusted users. The issue is fixed in v0.34.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 19:30 UTC
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
Docker
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/moby/buildkit/security/advisor… | vendor-advisory |
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CVE-2026-119336 (GCVE-0-2026-119336)
Vulnerability from cvelistv5 – Published: 2026-10-30 20:05 – Updated: 2026-10-30 22:14
VLAI
EPSS
VEX
Title
Pi-hole: arbitrary root file clobber / chmod / disclosure via updatecheck.sh cron following /etc/pihole/versions symlink
Summary
Pi-hole is a DNS sinkhole that protects devices from unwanted content without installing any client-side software. From 6.4.2 until 6.5, the root-run advanced/Scripts/updatecheck.sh cron job applies truncate -s 0 and chmod 644 to /etc/pihole/versions while following symbolic links in a directory owned by the pihole user. An attacker executing as pihole can replace that path with a symlink so the scheduled root operations truncate or create an arbitrary root-owned file, or race the operations so chmod makes a sensitive target world-readable without truncating it. This issue is fixed in version 6.5.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 21:21 UTC
CWE
Assigner
GitHub_M
CNA
References
6 references
| URL | Tags |
|---|---|
| https://github.com/pi-hole/pi-hole/security/advis… | x_refsource_CONFIRM |
| https://github.com/pi-hole/pi-hole/pull/6719 | x_refsource_MISC |
| https://github.com/pi-hole/pi-hole/commit/85de82d… | x_refsource_MISC |
| https://github.com/pi-hole/pi-hole/commit/c1062f4… | x_refsource_MISC |
| https://github.com/pi-hole/pi-hole/commit/e05dc3f… | x_refsource_MISC |
| https://github.com/pi-hole/pi-hole/releases/tag/v6.5 | x_refsource_MISC |
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CVE-2026-118688 (GCVE-0-2026-118688)
Vulnerability from cvelistv5 – Published: 2026-10-28 18:59 – Updated: 2026-11-04 15:08
VLAI
EPSS
VEX
Title
Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 Sandbox Escape via Symlink Rename
Summary
wasmtime-wasi in Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 re-appends a trailing slash to rename source paths, causing renameat on macOS and FreeBSD hosts to follow directory symlinks. A guest with sandbox write access can rename a relative symlink such as "up/" to move host directories into its sandbox and read or write them.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 15:08 UTC
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/bytecodealliance/wasmtime/secu… | vendor-advisory |
| https://www.vulncheck.com/advisories/wasmtime-bef… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| bytecodealliance | wasmtime |
Affected:
0 , < 36.0.18
(semver)
Unaffected: 36.0.18 (semver) Affected: 37.0.0 , < 48.0.6 (semver) Unaffected: 48.0.6 (semver) Affected: 49.0.0 , < 49.0.3 (semver) Unaffected: 49.0.3 (semver) cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:* cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:* cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:* |
Date Public
2026-10-14 00:00
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CVE-2026-115908 (GCVE-0-2026-115908)
Vulnerability from cvelistv5 – Published: 2026-10-26 16:34 – Updated: 2026-10-26 19:36
VLAI
EPSS
VEX
Title
zip: Arbitrary file write outside the extraction directory, because ZipArchive::extract validates symlink targets lexically. (The defense against CVE-2025-29787 was broken in v7.2.0)
Summary
zip is a zip library for Rust that supports reading and writing simple ZIP files. From 7.2.0 until 9.0.0, ZipArchive::extract and ZipArchive::extract_unwrapped_root_dir use safe_prepare_path in src/read/zipfile.rs and simplified_components in src/path.rs to validate symbolic link targets with a lexical prefix comparison rather than resolving each intermediate link. An attacker who knows or can guess the absolute extraction destination can create a chain whose apparent target remains under the destination while an intermediate symlink resolves outside it, allowing attacker-controlled files to be created or overwritten with the extracting process's privileges. On Windows, discarded drive and UNC prefixes can permit a single-link escape when the process has SeCreateSymbolicLinkPrivilege, such as through administrator rights or Developer Mode. This regression is distinct from CVE-2025-29787. This issue is fixed in version 9.0.0.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-26 19:29 UTC
CWE
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/zip-rs/zip2/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/zip-rs/zip2/commit/09c030eab56… | x_refsource_MISC |
| https://github.com/zip-rs/zip2/releases/tag/v9.0.0 | x_refsource_MISC |
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CVE-2026-115424 (GCVE-0-2026-115424)
Vulnerability from cvelistv5 – Published: 2026-10-22 21:12 – Updated: 2026-11-02 21:01
VLAI
EPSS
VEX
Title
Oc: oc: symlink/hardlink target validation bypass in oc image extract allows file write outside destination
Summary
A flaw was found in the OpenShift client oc. When extracting container image layers with oc image extract, the application fails to properly sanitize symbolic and hard link targets pointing to absolute paths or to sibling directories of the extraction destination. An attacker who supplies a malicious container image can exploit this vulnerability by embedding links, and a chained file entry, that reference locations outside the intended extraction directory. This allows the attacker to write attacker-controlled content to arbitrary locations on the host filesystem with the privileges of the user running the command, potentially leading to file modification outside the destination directory.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 20:42 UTC
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
redhat
CNA
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-115424 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2558338 | issue-trackingx_refsource_REDHAT |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| 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
2026-10-21 15:35
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CVE-2026-115392 (GCVE-0-2026-115392)
Vulnerability from cvelistv5 – Published: 2026-10-22 19:13 – Updated: 2026-10-29 02:32
VLAI
EPSS
VEX
Title
Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 Sandbox Escape via Trailing Slashes
Summary
Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 allows a filesystem sandbox escape in wasmtime-wasi because its cap-std dependency mishandles symlinks with trailing slashes on macOS and Linux kernels lacking openat2. A guest with write access to any sandboxed directory can read and write any host-accessible file, and read-only guests may read host files via preexisting symlinks.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 02:31 UTC
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/bytecodealliance/wasmtime/secu… | vendor-advisory |
| https://www.vulncheck.com/advisories/wasmtime-bef… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| bytecodealliance | wasmtime |
Affected:
0 , < 24.0.13
(semver)
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Date Public
2026-08-20 00:00
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CVE-2026-108981 (GCVE-0-2026-108981)
Vulnerability from cvelistv5 – Published: 2026-10-12 02:27 – Updated: 2026-10-14 17:18
VLAI
EPSS
VEX
Summary
ngx_cache_purge before 3.0.4 can allow file deletion via a symlink attack in certain situations where nginx and a served application (e.g., WordPress) run under the same user account. The attacker must be able to create a symlink inside the cache path. Version 3.0.4 fixes this for the case of a symlink created at an arbitrary earlier time, but does not resolve an applicable TOCTOU race condition. (The ngx_cache_purge module follows symlinks while walking the cache directory tree during purge operations. The module relies on nginx's ngx_walk_tree(), which relies on stat() and therefore follows symlinks.)
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 17:17 UTC
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
mitre
CNA
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| denji | ngx_cache_purge |
Affected:
2.4.0 , ≤ 2.5.6
(semver)
Affected: 3.0.0 , < 3.0.4 (semver) |
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"value": "ngx_cache_purge before 3.0.4 can allow file deletion via a symlink attack in certain situations where nginx and a served application (e.g., WordPress) run under the same user account. The attacker must be able to create a symlink inside the cache path. Version 3.0.4 fixes this for the case of a symlink created at an arbitrary earlier time, but does not resolve an applicable TOCTOU race condition. (The ngx_cache_purge module follows symlinks while walking the cache directory tree during purge operations. The module relies on nginx\u0027s ngx_walk_tree(), which relies on stat() and therefore follows symlinks.)"
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"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 3.6,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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"description": "CWE-61 UNIX Symbolic Link (Symlink) Following",
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"url": "https://github.com/nginx-modules/ngx_cache_purge/commit/a6da1352f52a8a02dd6828e88c39ed42fddcee96"
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"solutions": [
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"value": "Fixed in commit a6da135 (PR #72) on the releases/stable-3.0 branch. 2.4 through 2.5.6 users should upgrade to 3.x, or backport the change to the two ngx_walk_tree() call sites in those versions.\n\n\n\n\n\n\u003cbr\u003e"
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"value": "Fixed in commit a6da135 (PR #72) on the releases/stable-3.0 branch. 2.4 through 2.5.6 users should upgrade to 3.x, or backport the change to the two ngx_walk_tree() call sites in those versions."
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"value": "Restrict write access to the cache directories and all of their parent directories to the nginx user only, and do not run nginx and untrusted application code (for example PHP-FPM) as the same user. Remove any symbolic links found inside configured cache paths (find \u0026lt;cache_path\u0026gt; -type l). These measures also limit the similar traversal in nginx\u0027s own cache loader, which the fix in the module does not change.\n\n\n\n\n\n\u003cbr\u003e"
}
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"value": "Restrict write access to the cache directories and all of their parent directories to the nginx user only, and do not run nginx and untrusted application code (for example PHP-FPM) as the same user. Remove any symbolic links found inside configured cache paths (find \u003ccache_path\u003e -type l). These measures also limit the similar traversal in nginx\u0027s own cache loader, which the fix in the module does not change."
}
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"cveId": "CVE-2026-108981",
"datePublished": "2026-10-12T02:27:15.378Z",
"dateReserved": "2026-10-12T02:27:14.593Z",
"dateUpdated": "2026-10-14T17:18:00.208Z",
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Mitigation
Implementation
Symbolic link attacks often occur when a program creates a tmp directory that stores files/links. Access to the directory should be restricted to the program as to prevent attackers from manipulating the files.
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-27: Leveraging Race Conditions via Symbolic Links
This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.