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-2026-108981 (GCVE-0-2026-108981)

Vulnerability from cvelistv5 – Published: 2026-10-12 02:27 – Updated: 2026-10-14 17:18
VLAI
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
3.6 (Low)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
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 under the mitre root
CNA scorecard E 28/100 over 2362 records in the last 180 days details
References
Impacted products
Vendor Product Version
denji ngx_cache_purge Affected: 2.4.0 , ≤ 2.5.6 (semver)
Affected: 3.0.0 , < 3.0.4 (semver)
Create a notification for this product.
Show details on NVD website
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CVE-2026-107810 (GCVE-0-2026-107810)

Vulnerability from cvelistv5 – Published: 2026-10-09 15:25 – Updated: 2026-10-13 16:56
VLAI
Title
Nginx UI: Backup restore follows crafted symlinks into the live Nginx configuration path before restore flags are applied
Summary
Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, internal/backup/restore.go extracts inner archives before applying the restore_nginx and restore_nginx_ui flags and permits symlinks targeting the live Nginx configuration path. An authenticated user who can create and restore backups can craft a valid backup that places a symlink in the staging tree and then writes a regular file through that link, even when both restore flags are false. This can persistently inject configuration or cause denial of service when the modified files are later consumed. This issue is fixed in version 2.5.0.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 16:56 UTC
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('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
0xJacky nginx-ui Affected: >= 2.0.0, < 2.5.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-107174 (GCVE-0-2026-107174)

Vulnerability from cvelistv5 – Published: 2026-10-07 14:34 – Updated: 2026-10-07 16:17
VLAI
Title
Source-to-image: source-to-image: security boundary bypass via absolute symbolic link extraction
Summary
A flaw was found in source-to-image. When unpacking archive files, the application fails to properly sanitize symbolic links pointing to absolute file paths. An attacker who supplies a malicious builder image can exploit this vulnerability by embedding links pointing outside the extraction directory. This allows the attacker to bypass sandbox boundaries, potentially leading to unauthorized information disclosure or file modification on the host system.
Severity
6.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 16:17 UTC
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1031 records in the last 180 days details
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-107174 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2547419 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-10-07 12:58
Credits
Red Hat would like to thank Yashashree Gund for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-106566 (GCVE-0-2026-106566)

Vulnerability from cvelistv5 – Published: 2026-10-07 15:21 – Updated: 2026-10-07 17:04
VLAI
Title
ImageMagick: Policy Bypass in delegate symlink cleanup due to missing check
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-32, delegate symlink cleanup does not check the MAGICK_SHRED_PASSES environment variable, allowing a local privileged workflow to overwrite a file with random data. This issue is fixed in version 7.1.2-32.
Severity
4 (Medium)
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 16:06 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
ImageMagick ImageMagick Affected: < 6.9.13-57
Affected: >= 7.0.0, < 7.1.2-32
Create a notification for this product.
Show details on NVD website
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CVE-2026-106507 (GCVE-0-2026-106507)

Vulnerability from cvelistv5 – Published: 2026-10-06 21:46 – Updated: 2026-10-07 15:03
VLAI
Title
Backstage: TechDocs arbitrary file read via mkdocs snippets
Summary
Backstage is an open framework for building developer portals. Prior to 1.15.4, the @backstage/plugin-techdocs-node package is affected by techdocs arbitrary file read via mkdocs snippets. Unsafe path resolution in TechDocs source tree handling allows an authenticated user who can register documentation sources to include content from outside the intended documentation boundary. Depending on deployment, this may expose files readable by the build process. This issue is fixed in version 1.15.4.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 15:03 UTC
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('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
Show details on NVD website
To clipboard 

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CVE-2026-105712 (GCVE-0-2026-105712)

Vulnerability from cvelistv5 – Published: 2026-10-05 18:53 – Updated: 2026-10-05 19:09
VLAI
Summary
gpgtar in GnuPG before 2.5.19 can allow file overwrite via crafted data in an archive. When extracting an untrusted archive with --directory (aka -C) into an existing directory containing a pre-existing symlink, gpgtar can follow that symlink and create or overwrite a file outside the selected extraction directory. The write is limited by the extraction user's filesystem permissions. An archive extracted into a fresh empty directory does not have this risk.
Severity
3.6 (Low)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 19:09 UTC
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2362 records in the last 180 days details
References
Impacted products
Vendor Product Version
GnuPG GnuPG Affected: 0 , < 2.5.19 (semver)
    cpe:2.3:a:gnupg:gnupg:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
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CVE-2026-103435 (GCVE-0-2026-103435)

Vulnerability from cvelistv5 – Published: 2026-10-07 12:50 – Updated: 2026-10-07 14:39
VLAI
Title
Arbitrary File Write via Write-Time Symlink Following (TOCTOU) in Claude Code
Summary
Claude Code validated that a target file path resided within the project working directory at permission-check time, but re-resolved the path at write time without repeating that validation. This time-of-check to time-of-use (TOCTOU) gap allowed an attacker who could write to the workspace to atomically replace a project file with a symlink, causing Claude Code to follow the symlink and write its output to an arbitrary file outside the project sandbox. Exploitation required the ability to win a race condition against the write operation and write access to the shared workspace, enabling a lower-privileged attacker to redirect benign edits to sensitive files (e.g., shell configuration) in a higher-privileged session. Users on standard Claude Code auto-update have received this fix already. Users performing manual updates are advised to update to the latest version. Thank you to hackerone.com/c_h4ck_0 for reporting this issue.
Severity
7.7 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/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 2026-10-07 14:39 UTC
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
Anthropic CNA under the mitre root
CNA scorecard – unranked: 5 records in the last 180 days, 10 needed details
References
Impacted products
Vendor Product Version
Anthropic @anthropic-ai/claude-code Affected: 0 , < 2.1.129 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-102740 (GCVE-0-2026-102740)

Vulnerability from cvelistv5 – Published: 2026-10-15 17:25 – Updated: 2026-10-15 18:27
VLAI
Title
AsyncHttpClient: Resumable download index store is created world-readable and follows a planted symlink
Summary
The AsyncHttpClient library allows Java applications to execute HTTP requests and asynchronously process HTTP responses. From 2.0.0 until 2.16.1 and 3.0.12, PropertiesBasedResumableProcessor stores resumable download state at the predictable shared path $java.io.tmpdir/ahc/ResumableAsyncHandler.properties with default permissions and link-following file operations. A local user who can read the shared store can see download URLs, including embedded user information or query tokens. A local user who can write within or pre-create the affected shared store directory can plant a symbolic link that the client follows when saving state, truncating and overwriting a target file writable by the client process. The filesystem path is used when ResumableAsyncHandler decorates another AsyncHandler, while the no-argument constructors use a no-op processor and are unaffected. This issue is fixed in versions 2.16.1 and 3.0.12.
Severity
5.8 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 18:26 UTC
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
  • CWE-379 - Creation of Temporary File in Directory with Insecure Permissions
  • CWE-732 - Incorrect Permission Assignment for Critical Resource
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
AsyncHttpClient async-http-client Affected: >= 2.0.0, < 2.16.1
Affected: >= 3.0.0, < 3.0.12
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-97024 (GCVE-0-2026-97024)

Vulnerability from cvelistv5 – Published: 2026-09-29 03:23 – Updated: 2026-09-29 10:38
VLAI
Title
Flatpak: flatpak: arbitrary write in root context via path traversal in deploy directory files/etc
Summary
A path traversal vulnerability in Flatpak's handling of the files/etc directory during app deployment allows a malicious Flatpak app to cause certain host system files (such as passwd, group, machine-id, or resolv.conf) to be emptied or replaced with a symlink when the app is installed or upgraded. In system-wide installations, the write is performed as root.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 10:37 UTC
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1031 records in the last 180 days details
References
Impacted products
Date Public
2026-09-28 13:29
Credits
Red Hat would like to thank Sebastian Wick for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-97023 (GCVE-0-2026-97023)

Vulnerability from cvelistv5 – Published: 2026-09-28 18:53 – Updated: 2026-09-28 19:27
VLAI
Title
Flatpak: flatpak: arbitrary file deletion in root context via path traversal in deploy directory export/bin
Summary
A path traversal vulnerability in Flatpak's handling of the export/bin directory during app deployment allows a malicious Flatpak app to cause deletion of attacker-chosen files outside the deployment directory when the app is installed or upgraded. In system-wide installations, the deletion is performed as root.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 19:26 UTC
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1031 records in the last 180 days details
References
Impacted products
Date Public
2026-09-28 13:29
Credits
Red Hat would like to thank Sebastian Wick for reporting this issue.
Show details on NVD website
To clipboard 

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      "title": "Flatpak: flatpak: arbitrary file deletion in root context via path traversal in deploy directory export/bin",
      "workarounds": [
        {
          "lang": "en",
          "value": "Avoid installing Flatpak apps from non-trusted publishers, particularly in system-wide deployments."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-61: UNIX Symbolic Link (Symlink) Following"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-97023",
    "datePublished": "2026-09-28T18:53:28.600Z",
    "dateReserved": "2026-09-23T21:06:34.212Z",
    "dateUpdated": "2026-09-28T19:27:14.558Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
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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