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-2026-56692 (GCVE-0-2026-56692)
Vulnerability from cvelistv5 – Published: 2026-06-23 15:34 – Updated: 2026-09-17 18:57 X_Open Source
VLAI
EPSS
VEX
Title
NanoClaw < 2.1.17 - Arbitrary File Read via Symlink Following in forwardAttachedFiles
Summary
NanoClaw before 2.1.17 contains a symlink following vulnerability in forwardAttachedFiles that allows container-controlled agents to exfiltrate host-readable files. The host validates attachment filenames using only isSafeAttachmentName before copying with fs.copyFileSync, which follows symlinks without containment checks, allowing malicious agents to disclose arbitrary host files.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-24 13:57 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
VulnCheck
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/nanocoai/nanoclaw/pull/2468 | issue-trackingpatch |
| https://github.com/nanocoai/nanoclaw/commit/28032… | patch |
| https://www.vulncheck.com/advisories/nanoclaw-arb… | third-party-advisory |
Impacted products
Date Public
2026-06-09 00:00
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CVE-2026-56651 (GCVE-0-2026-56651)
Vulnerability from cvelistv5 – Published: 2026-08-27 13:22 – Updated: 2026-08-27 19:40 X_Open Source
VLAI
EPSS
VEX
Title
Arbitrary File Overwrite via Symlink Following in dool project
Summary
Dool in versions up to 1.3.8 is vulnerable to symlink following when the "--devel" flag is used, as the application opens a log file without the "O_NOFOLLOW" flag. A local attacker can exploit this by creating a symlink at the expected log file path pointing to a sensitive file, causing dool to truncate and overwrite the target file with log data, which is especially impactful if dool is run with elevated privileges.
The issue was addressed by pull request #116
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 19:39 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
CERT-PL
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/scottchiefbaker/dool/pull/116 | patch |
| https://cert.pl/en/posts/2026/08/CVE-2026-56651 | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| scottchiefbaker | dool |
Affected:
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CVE-2026-56236 (GCVE-0-2026-56236)
Vulnerability from cvelistv5 – Published: 2026-06-21 13:26 – Updated: 2026-11-08 14:05
VLAI
EPSS
VEX
Title
Capgo CLI - Arbitrary File Overwrite via Symlink-Following in Local Credential Operations
Summary
Capgo CLI before 12.128.2 contains arbitrary file overwrite vulnerabilities in login and build credentials operations that follow symlinks without validation. Attackers can create malicious symlinks in repositories to overwrite arbitrary files or expose credentials with world-readable permissions when developers run the CLI.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 18:10 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Cap-go/capgo/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/capgo-cli-ar… | third-party-advisory |
Impacted products
Date Public
2026-03-17 00:00
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CVE-2026-55828 (GCVE-0-2026-55828)
Vulnerability from cvelistv5 – Published: 2026-09-15 15:14 – Updated: 2026-09-15 18:02
VLAI
EPSS
VEX
Title
qbee transport: Symlink-chain path traversal in tar extraction (one level outside destination)
Summary
qbee transport is a remote access transport protocol implementation. Prior to 1.26.25, the extractTar routine uses strictly lexical path validation that does not account for on-disk symlinks created earlier in the extraction process. A crafted tar archive can use a symlink chain to write or overwrite files one directory level above the intended extraction path. When qbee-agent performs the extraction with root privileges, this permits a root-privileged file write outside the intended destination. This issue is fixed in version 1.26.25.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 17:38 UTC
CWE
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/qbee-io/transport/security/adv… | x_refsource_CONFIRM |
| https://github.com/qbee-io/transport/pull/19 | x_refsource_MISC |
| https://github.com/qbee-io/transport/commit/43947… | x_refsource_MISC |
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CVE-2026-55668 (GCVE-0-2026-55668)
Vulnerability from cvelistv5 – Published: 2026-07-08 14:55 – Updated: 2026-07-08 16:11
VLAI
EPSS
VEX
Title
File Browser: ScopedFs follows a dangling symlink on write, letting a scoped user create files outside their scope
Summary
File Browser provides a web file managing interface. Prior to 2.63.16, ScopedFs validates the nearest existing ancestor of a dangling symlink as in scope and then follows the symlink during file creation, allowing an authenticated user with Create and Modify permissions to create attacker-controlled files outside the user's scope. This issue is fixed in version 2.63.16.
Severity
6.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 16:11 UTC
CWE
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/filebrowser/filebrowser/securi… | x_refsource_CONFIRM |
| https://github.com/filebrowser/filebrowser/commit… | x_refsource_MISC |
| https://github.com/filebrowser/filebrowser/releas… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| filebrowser | filebrowser |
Affected:
< 2.63.16
|
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CVE-2026-55667 (GCVE-0-2026-55667)
Vulnerability from cvelistv5 – Published: 2026-06-25 17:32 – Updated: 2026-06-26 02:12
VLAI
EPSS
VEX
Title
File Browser: Out-of-scope file deletion by a Create-only scoped user via symlink-following RemoveAll in upload failure-cleanup
Summary
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.16, a scoped, non-admin File Browser user holding only the Create permission can delete arbitrary files outside their scope (other tenants' data, and the application's own database) via the upload failure-cleanup path. ScopedFs.RemoveAll is the one dereferencing operation that skips the symlink guard every other method enforces. The direct-upload handler runs RemoveAll on the user-controlled path during failed-upload cleanup, gated only by Perm.Create. If an escaping directory symlink already exists inside the user's scope, an authenticated create-only user can delete an out-of-scope target, bypassing both the ScopedFs boundary and the Perm.Delete gate. This vulnerability is fixed in 2.63.16.
Severity
8.2 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-26 02:12 UTC
CWE
Assigner
GitHub_M
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/filebrowser/filebrowser/securi… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| filebrowser | filebrowser |
Affected:
< 2.63.16
|
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CVE-2026-55607 (GCVE-0-2026-55607)
Vulnerability from cvelistv5 – Published: 2026-06-29 14:04 – Updated: 2026-06-29 15:51
VLAI
EPSS
VEX
Title
Claude Code: Sandbox Escape via Git Worktree Path Confusion Allows Unsandboxed Code Execution
Summary
Claude Code is an agentic coding tool. From 2.1.38 until 2.1.163, Claude Code's worktree handling allowed creation of worktrees named ".git" and navigation to worktrees outside the sandbox context, enabling git directory confusion attacks. By exploiting symlink manipulation and git fsmonitor execution during worktree operations, an attacker could overwrite files in the user's home directory (such as .zshenv), leading to code execution outside of seatbelt sandbox restrictions. Reliably exploiting this required the user to clone a malicious repository containing prompt injection content and run Claude Code against it. This vulnerability is fixed in 2.1.163.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-29 15:51 UTC
CWE
Assigner
GitHub_M
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
>= 2.1.38, < 2.1.163
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CVE-2026-55569 (GCVE-0-2026-55569)
Vulnerability from cvelistv5 – Published: 2026-08-28 16:26 – Updated: 2026-09-01 01:44
VLAI
EPSS
VEX
Title
aqua: Archive extraction in aqua follows attacker-planted symlinks, allowing writes outside the install directory
Summary
aqua is a declarative command-line version manager written in Go. Prior to 2.60.1, pkg/unarchive/archives.go in the handler.HandleFile method calls os.Symlink with archives.FileInfo.LinkTarget without verifying that the target remains under the extraction destination. A later regular-file entry at the same archive path is opened with OpenFile using O_CREATE and O_WRONLY, which follows the attacker-planted symlink. A malicious or compromised package archive can therefore write attacker-controlled bytes outside aqua's extraction directory with the privileges of the user running aqua, potentially overwriting shell startup files, tool configuration, or writable executable paths. This issue is fixed in version 2.60.1.
Severity
6.6 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 01:43 UTC
CWE
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aquaproj/aqua/security/advisor… | x_refsource_CONFIRM |
| https://github.com/aquaproj/aqua/commit/d5b02b220… | x_refsource_MISC |
| https://github.com/aquaproj/aqua/releases/tag/v2.60.1 | x_refsource_MISC |
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CVE-2026-55498 (GCVE-0-2026-55498)
Vulnerability from cvelistv5 – Published: 2026-10-14 19:57 – Updated: 2026-10-15 15:28
VLAI
EPSS
VEX
Title
FileRise Shared Folder Symlink Escape
Summary
FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.15.0, FileRise public shared-folder links with subfolder browsing enabled can follow a symbolic link inside the shared folder to a sibling directory under the upload root. An unauthenticated holder of a valid share token can use shared-folder listing, direct download, or ZIP creation to access files outside the folder that was actually shared. The flaw occurs because the affected shared-folder paths resolve symlinks without enforcing the original shared folder as the real-path boundary. This issue is fixed in version 3.15.0.
Severity
4.8 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 15:28 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/error311/FileRise/security/adv… | x_refsource_CONFIRM |
| https://github.com/error311/FileRise/commit/f24af… | x_refsource_MISC |
| https://github.com/error311/FileRise/releases/tag… | x_refsource_MISC |
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CVE-2026-55480 (GCVE-0-2026-55480)
Vulnerability from cvelistv5 – Published: 2026-10-15 17:09 – Updated: 2026-10-20 02:59
VLAI
EPSS
VEX
Title
CUPS copy_model() creates a predictable PPD tempfile without O_EXCL/O_NOFOLLOW (symlink TOCTOU, lp → root)
Summary
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, copy_model() in scheduler/ipp.c creates a predictable TempDir/<connection-number>.ppd path in an lp-group-writable directory and opens it as root without O_EXCL or O_NOFOLLOW. Exploitation requires an lp-group process able to write that directory to predict the connection-derived name and plant a symlink before the root open, while a privileged add-printer or modify-printer operation using a model PPD triggers copy_model(). The reporter treats an existing lp foothold and the privileged operation as distinct prerequisites, while the maintainer assesses high privileges because installing the relevant filter or administering the printer requires root or print-administrator access. If the race succeeds, the root scheduler follows the symlink and truncates or overwrites a root-writable target with generated PPD data, compromising file integrity or availability. This issue is fixed in version 2.4.20.
Severity
5.7 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 02:58 UTC
CWE
Assigner
GitHub_M
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/OpenPrinting/cups/security/adv… | x_refsource_CONFIRM |
| https://github.com/OpenPrinting/cups/commit/98adf… | x_refsource_MISC |
| https://github.com/OpenPrinting/cups/commit/f6a11… | x_refsource_MISC |
| https://github.com/OpenPrinting/cups/releases/tag… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenPrinting | cups |
Affected:
< 2.4.20
|
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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.