Common Weakness Enumeration

CWE-61

Allowed

UNIX Symbolic Link (Symlink) Following

Abstraction: Compound · Status: Incomplete

API response cwe.mitre.org

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.

327 vulnerabilities reference this CWE, most recent first.

CVE-2025-62596 (GCVE-0-2025-62596)

Vulnerability from cvelistv5 – Published: 2025-11-05 23:14 – Updated: 2025-11-06 16:54
VLAI
Title
youki container escape and denial of service due to arbitrary write gadgets and procfs write redirects
Summary
Youki is a container runtime written in Rust. In versions 0.5.6 and below, youki’s apparmor handling performs insufficiently strict write-target validation, and when combined with path substitution during pathname resolution, can allow writes to unintended procfs locations. While resolving a path component-by-component, a shared-mount race can substitute intermediate components and redirect the final target. This issue is fixed in version 0.5.7.
Severity
7.3 (High)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-06 16:54 UTC
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
  • CWE-363 - Race Condition Enabling Link Following
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
youki-dev youki Affected: < 0.5.7
Create a notification for this product.
Show details on NVD website
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CVE-2025-62161 (GCVE-0-2025-62161)

Vulnerability from cvelistv5 – Published: 2025-11-05 23:09 – Updated: 2025-11-06 21:20
VLAI
Title
youki container escape via "masked path" abuse due to mount race conditions
Summary
Youki is a container runtime written in Rust. In versions 0.5.6 and below, the initial validation of the source /dev/null is insufficient, allowing container escape when youki utilizes bind mounting the container's /dev/null as a file mask. This issue is fixed in version 0.5.7.
Severity
7.3 (High)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-06 21:20 UTC
CWE
  • CWE-363 - Race Condition Enabling Link Following
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
youki-dev youki Affected: < 0.5.7
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-59829 (GCVE-0-2025-59829)

Vulnerability from cvelistv5 – Published: 2025-10-03 20:03 – Updated: 2025-10-03 20:45
VLAI
Title
Claude Code: Permission deny bypass is possible through symlink
Summary
Claude Code is an agentic coding tool. Versions below 1.0.120 failed to account for symlinks when checking permission deny rules. If a user explicitly denied Claude Code access to a file and Claude Code had access to a symlink pointing to that file, it was possible for Claude Code to access the file. Users on standard Claude Code auto-update will have received this fix automatically. Users performing manual updates are advised to update to the latest version. This issue is fixed in version 1.0.120.
Severity
2.3 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-03 20:24 UTC
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
anthropics claude-code Affected: < 1.0.120
Create a notification for this product.
Show details on NVD website
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CVE-2025-59825 (GCVE-0-2025-59825)

Vulnerability from cvelistv5 – Published: 2025-09-23 20:00 – Updated: 2025-09-24 18:41
VLAI
Title
astral-tokio-tar has a path traversal in tar extraction
Summary
astral-tokio-tar is a tar archive reading/writing library for async Rust. In versions 0.5.3 and earlier of astral-tokio-tar, tar archives may extract outside of their intended destination directory when using the Entry::unpack_in_raw API. Additionally, the Entry::allow_external_symlinks control (which defaults to true) could be bypassed via a pair of symlinks that individually point within the destination but combine to point outside of it. These behaviors could be used individually or combined to bypass the intended security control of limiting extraction to the given directory. This in turn would allow an attacker with a malicious tar archive to perform an arbitrary file write and potentially pivot into code execution. This issue has been patched in version 0.5.4. There is no workaround other than upgrading.
Severity
6.1 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-24 18:41 UTC
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
astral-sh tokio-tar Affected: < 0.5.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-59343 (GCVE-0-2025-59343)

Vulnerability from cvelistv5 – Published: 2025-09-24 17:43 – Updated: 2025-11-03 18:13
VLAI
Title
tar-fs has a symlink validation bypass if destination directory is predictable with a specific tarball
Summary
tar-fs provides filesystem bindings for tar-stream. Versions prior to 3.1.1, 2.1.3, and 1.16.5 are vulnerable to symlink validation bypass if the destination directory is predictable with a specific tarball. This issue has been patched in version 3.1.1, 2.1.4, and 1.16.6. A workaround involves using the ignore option on non files/directories.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-03 14:49 UTC
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
mafintosh tar-fs Affected: >= 3.0.0, < 3.1.1
Affected: >= 2.0.0, < 2.1.3
Affected: < 1.16.5
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-57802 (GCVE-0-2025-57802)

Vulnerability from cvelistv5 – Published: 2025-08-25 17:39 – Updated: 2025-08-25 17:52
VLAI
Title
Airlink's Daemon Symlink Vulnerability
Summary
Airlink's Daemon interfaces with Docker and the Panel to provide secure access for controlling instances via the Panel. In version 1.0.0, an attacker with access to the affected container can create symbolic links inside the mounted directory (/app/data). Because the container bind-mounts an arbitrary host path, these symlinks can point to sensitive locations on the host filesystem. When the application or other processes follow these symlinks, the attacker can gain unauthorized read access to host files outside the container. This issue has been patched in version 1.0.1.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-25 17:51 UTC
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
airlinklabs daemon Affected: = 1.0.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-55345 (GCVE-0-2025-55345)

Vulnerability from cvelistv5 – Published: 2025-08-13 08:55 – Updated: 2025-08-13 19:58
VLAI
Title
Unsafe symlink following in restricted workspace-write sandbox leads to RCE
Summary
Using Codex CLI in workspace-write mode inside a malicious context (repo, directory, etc) could lead to arbitrary file overwrite and potentially remote code execution due to symlinks being followed outside the allowed current working directory.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-13 17:55 UTC
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
JFROG CNA under the mitre root
CNA scorecard C 75/100 over 62 records in the last 180 days details
References
Impacted products
Vendor Product Version
Affected: 0 , < 0.12.0 (semver)
Show details on NVD website
To clipboard 

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CVE-2025-54867 (GCVE-0-2025-54867)

Vulnerability from cvelistv5 – Published: 2025-08-14 16:08 – Updated: 2025-08-14 19:26
VLAI
Title
Youki Symlink Following Vulnerability
Summary
Youki is a container runtime written in Rust. Prior to version 0.5.5, if /proc and /sys in the rootfs are symbolic links, they can potentially be exploited to gain access to the host root filesystem. This issue has been patched in version 0.5.5.
Severity
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-14 18:43 UTC
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
youki-dev youki Affected: < 0.5.5
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-53881 (GCVE-0-2025-53881)

Vulnerability from cvelistv5 – Published: 2025-10-02 13:51 – Updated: 2025-10-02 17:38
VLAI
Title
SUSE-specific logrotate configuration allows escalation from mail user/group to root
Summary
A UNIX Symbolic Link (Symlink) Following vulnerability in logrotate config in the exim package allowed privilege escalation from mail user/group to root.This issue affects Tumbleweed: from ? before 4.98.2-lp156.248.1.
Severity
6.9 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-02 17:15 UTC
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
suse CNA under the mitre root
CNA scorecard B 78/100 over 101 records in the last 180 days details
References
Impacted products
Vendor Product Version
openSUSE Tumbleweed Affected: ? , < 4.98.2-lp156.248.1 (semver)
Create a notification for this product.
Date Public
2025-09-26 04:35
Credits
Matthias Gerstner of SUSE
Show details on NVD website
To clipboard 

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CVE-2025-52881 (GCVE-0-2025-52881)

Vulnerability from cvelistv5 – Published: 2025-11-06 20:23 – Updated: 2025-11-06 21:07
VLAI
Title
runc: LSM labels can be bypassed with malicious config using dummy procfs files
Summary
runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7, 1.3.2 and 1.4.0-rc.2, an attacker can trick runc into misdirecting writes to /proc to other procfs files through the use of a racing container with shared mounts (we have also verified this attack is possible to exploit using a standard Dockerfile with docker buildx build as that also permits triggering parallel execution of containers with custom shared mounts configured). This redirect could be through symbolic links in a tmpfs or theoretically other methods such as regular bind-mounts. While similar, the mitigation applied for the related CVE, CVE-2019-19921, was fairly limited and effectively only caused runc to verify that when LSM labels are written they are actually procfs files. This issue is fixed in versions 1.2.8, 1.3.3, and 1.4.0-rc.3.
Severity
7.3 (High)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-06 21:06 UTC
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
  • CWE-363 - Race Condition Enabling Link Following
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
opencontainers runc Affected: <= 1.2.7, < 1.2.8
Affected: <= 1.3.2, < 1.3.3
Affected: <= 1.4.0-rc.2, < 1.4.0-rc.3
Create a notification for this product.
Show details on NVD website
To clipboard 

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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.

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