EUVD-2026-62277
GHSA-3qrw-968g-4hqv
Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
Unauthenticated remote path traversal (PR:N/AV:N/AC:L) writing files outside the intended cache dir (S:C) with no read primitive (C:N) but full integrity and availability loss (I:H/A:H).
Primary rating from Vendor (wpscan).
CVSS VectorVendor: wpscan
Lifecycle Timeline
5DescriptionCVE.org
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.
Articles & Coverage 2
AnalysisAI
Arbitrary file write in the W3 Total Cache WordPress plugin before 2.10.5 lets unauthenticated remote attackers overwrite any existing file inside or outside the web root by manipulating the request path used to construct cache file names. Because the plugin builds cache filenames from an unvalidated path, attackers can clobber security-critical files such as Apache .htaccess, breaking the site and stripping hardening rules that other controls depend on. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions - remote unauthenticated exploitation against default installs of the W3 Total Cache plugin (versions before 2.10.5) on WordPress, per CVSS AV:N/AC:L/PR:N/UI:N. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals partially conflict and should be read together. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade W3 Total Cache to version 2.10.5 or later, which validates the request path used for cache file names; this is the primary and recommended fix (see the WPScan advisory at https://wpscan.com/vulnerability/dc56cdd2-419b-4a64-9d2a-29dc7e79cb6d/ and NVD https://nvd.nist.gov/vuln/detail/CVE-2026-18051). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all WordPress installations running W3 Total Cache and determine which are running versions prior to 2.10.5 using your WordPress audit tools or security scanner. …
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Same weakness CWE-22 – Path Traversal
View allSame technique Path Traversal
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External POC / Exploit Code
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