CVE-2026-108981

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.)

CVSS v3 3.6 LOW

3.6^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.0 / Impact : 2.5

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/nginx-modules/ngx_cache_purge/commit/a6da1352f52a8a02dd6828e88c39ed42fddcee96
https://github.com/nginx-modules/ngx_cache_purge/pull/72
https://github.com/nginx-modules/ngx_cache_purge/releases/tag/3.0.4

Configurations

No configuration.

History

12 Oct 2026, 03:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-12 03:17

Updated : 2026-10-16 19:56

NVD link : CVE-2026-108981

Mitre link : CVE-2026-108981

CVE.ORG link : CVE-2026-108981

JSON object : View

Products Affected

No product.

CWE

CWE-61

UNIX Symbolic Link (Symlink) Following

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