PoC Index

CVE-2026-18051

CRITICAL 10.0EPSS 0.4%

The W3 Total Cache WordPress plugin before 2.10.5 does not properly validate the request path it uses to build cache file names, allowing unauthenticated attackers to write a file into any existing directory on the server, inside or outside the web root, overwriting whatever occupies the target name. On Apache, the same flaw overwrites the site's .htaccess files, which breaks the site and can strip hardening rules that other security measures rely on.

CVSS v3.1
10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
EPSS
0.44% chance of exploitation in the next 30 days, 37th percentile
Published
2026-08-19

Proof-of-concept exploits (1)

References

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