CWE-61

UNIX Symbolic Link (Symlink) Following

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.

CVE-2026-24018 (GCVE-0-2026-24018)

Vulnerability from cvelistv5 – Published: 2026-03-10 16:44 – Updated: 2026-03-11 13:08
VLAI
Summary
A UNIX symbolic link (Symlink) following vulnerability in Fortinet FortiClientLinux 7.4.0 through 7.4.4, FortiClientLinux 7.2.2 through 7.2.12 may allow a local and unprivileged user to escalate their privileges to root.
Severity
7.4 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-61 - Escalation of privilege
Assigner
References
Impacted products
Vendor Product Version
Fortinet FortiClientLinux Affected: 7.4.0 , ≤ 7.4.4 (semver)
Affected: 7.2.2 , ≤ 7.2.12 (semver)
    cpe:2.3:a:fortinet:forticlientlinux:7.4.4:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.4.3:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.4.2:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.2.12:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.2.11:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.2.10:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.2.9:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.2.8:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.2.7:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.2.6:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.2.5:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.2.4:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.2.3:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:forticlientlinux:7.2.2:*:*:*:*:*:*:*
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CVE-2026-24047 (GCVE-0-2026-24047)

Vulnerability from cvelistv5 – Published: 2026-01-21 22:45 – Updated: 2026-01-22 16:49
VLAI
Title
@backstage/cli-common has a possible `resolveSafeChildPath` Symlink Chain Bypass
Summary
Backstage is an open framework for building developer portals, and @backstage/cli-common provides config loading functionality used by the backend and command line interface of Backstage. Prior to version 0.1.17, the `resolveSafeChildPath` utility function in `@backstage/backend-plugin-api`, which is used to prevent path traversal attacks, failed to properly validate symlink chains and dangling symlinks. An attacker could bypass the path validation via symlink chains (creating `link1 → link2 → /outside` where intermediate symlinks eventually resolve outside the allowed directory) and dangling symlinks (creating symlinks pointing to non-existent paths outside the base directory, which would later be created during file operations). This function is used by Scaffolder actions and other backend components to ensure file operations stay within designated directories. This vulnerability is fixed in `@backstage/backend-plugin-api` version 0.1.17. Users should upgrade to this version or later. Some workarounds are available. Run Backstage in a containerized environment with limited filesystem access and/or restrict template creation to trusted users.
Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
Impacted products
Vendor Product Version
backstage backstage Affected: < 0.1.17
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CVE-2026-25724 (GCVE-0-2026-25724)

Vulnerability from cvelistv5 – Published: 2026-02-06 17:53 – Updated: 2026-03-27 21:11
VLAI
Title
Claude Code Has Permission Deny Bypass Through Symbolic Links
Summary
Claude Code is an agentic coding tool. Prior to version 2.1.7, Claude Code failed to strictly enforce deny rules configured in settings.json when accessing files through symbolic links. If a user explicitly denied Claude Code access to a file (such as /etc/passwd) and Claude Code had access to a symbolic link pointing to that file, it was possible for Claude Code to read the restricted file through the symlink without triggering deny rule enforcement. This issue has been patched in version 2.1.7.
Severity
2.3 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
  • CWE-285 - Improper Authorization
Assigner
References
Impacted products
Vendor Product Version
anthropics claude-code Affected: < 2.1.7
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CVE-2026-27485 (GCVE-0-2026-27485)

Vulnerability from cvelistv5 – Published: 2026-02-21 09:27 – Updated: 2026-02-24 18:15
VLAI
Title
OpenClaw affected by Stored XSS in Control UI via unsanitized assistant name/avatar in inline script injection
Summary
OpenClaw is a personal AI assistant. In versions 2026.2.17 and below, skills/skill-creator/scripts/package_skill.py (a local helper script used when authors package skills) previously followed symlinks while building .skill archives. If an author runs this script on a crafted local skill directory containing symlinks to files outside the skill root, the resulting archive can include unintended file contents. If exploited, this vulnerability can lead to potential unintentional disclosure of local files from the packaging machine into a generated .skill artifact, but requires local execution of the packaging script on attacker-controlled skill contents. This issue has been fixed in version 2026.2.18.
Severity
4.6 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
Impacted products
Vendor Product Version
openclaw openclaw Affected: < 2026.2.19
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CVE-2026-27489 (GCVE-0-2026-27489)

Vulnerability from cvelistv5 – Published: 2026-04-01 17:33 – Updated: 2026-04-01 19:09
VLAI
Title
ONNX: Path Traversal via Symlink
Summary
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, a path traversal vulnerability via symlink allows to read arbitrary files outside model or user-provided directory. This issue has been patched in version 1.21.0.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-23 - Relative Path Traversal
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
Impacted products
Vendor Product Version
onnx onnx Affected: < 1.21.0
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CVE-2026-27976 (GCVE-0-2026-27976)

Vulnerability from cvelistv5 – Published: 2026-02-25 23:34 – Updated: 2026-02-27 04:55
VLAI
Title
Zed Extension Sandbox Escape via Tar Symlink Following
Summary
Zed, a code editor, has an extension installer allows tar/gzip downloads. Prior to version 0.224.4, the tar extractor (`async_tar::Archive::unpack`) creates symlinks from the archive without validation, and the path guard (`writeable_path_from_extension`) only performs lexical prefix checks without resolving symlinks. An attacker can ship a tar that first creates a symlink inside the extension workdir pointing outside (e.g., `escape -> /`), then writes files through the symlink, causing writes to arbitrary host paths. This escapes the extension sandbox and enables code execution. Version 0.224.4 patches the issue.
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 (v2.0.3)
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
Impacted products
Vendor Product Version
zed-industries zed Affected: < 0.224.4
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CVE-2026-28684 (GCVE-0-2026-28684)

Vulnerability from cvelistv5 – Published: 2026-04-20 16:25 – Updated: 2026-04-20 17:43
VLAI
Title
python-dotenv: Symlink following in set_key allows arbitrary file overwrite via cross-device rename fallback
Summary
python-dotenv reads key-value pairs from a .env file and can set them as environment variables. Prior to version 1.2.2, `set_key()` and `unset_key()` in python-dotenv follow symbolic links when rewriting `.env` files, allowing a local attacker to overwrite arbitrary files via a crafted symlink when a cross-device rename fallback is triggered. Users should upgrade to v.1.2.2 or, as a workaround, apply the patch manually.
Severity
6.6 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
Impacted products
Vendor Product Version
theskumar python-dotenv Affected: < 1.2.2
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Show details on NVD website
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CVE-2026-29203 (GCVE-0-2026-29203)

Vulnerability from cvelistv5 – Published: 2026-05-08 18:51 – Updated: 2026-05-15 17:14
VLAI
Summary
A chmod call in the cPanel Nova plugin's Cpanel::Nova::Connector follows symlinks, allowing setting root permissions on arbitrary system files or directories. That can cause DoS or local privilege escalation when an authenticated cPanel user places a symlink at a user-controlled legacy Nova path under their home directory.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
Impacted products
Vendor Product Version
WebPros cPanel Affected: 11.136.0.0 , < 11.136.0.9 (semver)
Affected: 11.134.0.0 , < 11.134.0.25 (semver)
Affected: 11.132.0.0 , < 11.132.0.31 (semver)
Affected: 11.130.0.0 , < 11.130.0.22 (semver)
Affected: 11.126.0.0 , < 11.126.0.58 (semver)
Affected: 11.124.0.0 , < 11.124.0.37 (semver)
Affected: 11.118.0.0 , < 11.118.0.66 (semver)
Affected: 11.110.0.0 , < 11.110.0.117 (semver)
Affected: 11.102.0.0 , < 11.102.0.41 (semver)
Affected: 11.94.0.0 , < 11.94.0.30 (semver)
Affected: 11.86.0.0 , < 11.86.0.43 (semver)
Create a notification for this product.
WebPros cPanel (CloudLinux 6, CentOS 6) Affected: 11.110.0.0 , < 11.110.0.116 (semver)
Create a notification for this product.
WebPros WP Squared Affected: 11.136.1.0 , < 11.136.1.10 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-31893 (GCVE-0-2026-31893)

Vulnerability from cvelistv5 – Published: 2026-05-05 18:55 – Updated: 2026-05-05 19:37
VLAI
Title
Tunnelblick arbitrary file read via symlink following in tunnelblickd
Summary
Tunnelblick is an open source graphic user interface for OpenVPN on macOS. In versions 3.3beta26 through 9.0beta01, any local user can read arbitrary root-owned files by exploiting a symlink following vulnerability in tunnelblick-helper, reachable through the world-accessible tunnelblickd Unix socket. The socket is configured with mode 0666, allowing any local user to connect. No authorization check is performed on the connecting client. The tunnelblick-helper process constructs a path to config.ovpn inside a user-controlled .tblk directory and reads it as root without symlink validation. An attacker can create a .tblk configuration with a symlinked config.ovpn pointing to any file and request tunnelblickd to read it. This issue has been fixed in versions 9.0beta02.
Severity
6.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
Impacted products
Vendor Product Version
Tunnelblick Tunnelblick Affected: >= 3.3beta26, < 9.0beta02
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-33056 (GCVE-0-2026-33056)

Vulnerability from cvelistv5 – Published: 2026-03-20 07:11 – Updated: 2026-03-20 12:59
VLAI
Title
tar-rs: unpack_in can chmod arbitrary directories by following symlinks
Summary
tar-rs is a tar archive reading/writing library for Rust. In versions 0.4.44 and below, when unpacking a tar archive, the tar crate's unpack_dir function uses fs::metadata() to check whether a path that already exists is a directory. Because fs::metadata() follows symbolic links, a crafted tarball containing a symlink entry followed by a directory entry with the same name causes the crate to treat the symlink target as a valid existing directory — and subsequently apply chmod to it. This allows an attacker to modify the permissions of arbitrary directories outside the extraction root. This issue has been fixed in version 0.4.45.
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
Impacted products
Vendor Product Version
alexcrichton tar-rs Affected: < 0.4.45
Create a notification for this product.
Show details on NVD website
To clipboard 

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Mitigation

Phase: Implementation

Description:

  • 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 ID: MIT-48.1

Phase: Architecture and Design

Strategy: Separation of Privilege

Description:

  • 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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