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2 vulnerabilities by denji
CVE-2026-108981 (GCVE-0-2026-108981)
Vulnerability from nvd – Published: 2026-10-12 02:27 – Updated: 2026-10-14 17:18
VLAI
EPSS
VEX
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
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
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| denji | ngx_cache_purge |
Affected:
2.4.0 , ≤ 2.5.6
(semver)
Affected: 3.0.0 , < 3.0.4 (semver) |
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CVE-2026-108981 (GCVE-0-2026-108981)
Vulnerability from cvelistv5 – Published: 2026-10-12 02:27 – Updated: 2026-10-14 17:18
VLAI
EPSS
VEX
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
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
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| denji | ngx_cache_purge |
Affected:
2.4.0 , ≤ 2.5.6
(semver)
Affected: 3.0.0 , < 3.0.4 (semver) |
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