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CVE-2026-18051

W3 Total Cache < 2.10.5 - Unauthenticated Arbitrary Directory File Write and .htaccess Overwrite via Path Traversal in the Page Cache Key

Published: Aug 19, 2026Updated: Aug 19, 2026 Sources: CVE List NVDCWE-22
10.0CRITICAL
NVD MITRE
EPSS Score
0.4%
Top 63.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:NI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-22

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://wpscan.com/vulnerability/dc56cdd2-419b-4a64-9d2a-29dc7e79cb6d/
wpscan.com
News mentions
1

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