# CVE-2026-108981: libnginx-mod-http-cache-purge: ngx_cache_purge before 3.0.4 can allow file deletion via a symlink attack in certain situations where nginx and a ser...

CVE-2026-108981 is fixed in libnginx-mod-http-cache-purge on 1 platform by DEBIAN-CVE-2026-108981 (version 1:3.0.4-1), released October 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-108981
- Priority: Routine
- CVSS: 3.6 (low)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 12, 2026

## Description

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.)

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libnginx-mod-http-cache-purge Debian 14 | 1:3.0.4-1 | [DEBIAN-CVE-2026-108981](https://patchblox.com/security/data/fix/linux/debian-cve-2026-108981.md) | Oct 24, 2026 |

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Data as of 2026-11-10T01:44:33Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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