What is CVE-2026-66695?

CVE-2026-66695 is a medium-severity vulnerability in Boldgrid W3 Total Cache, classified under Path Traversal: '.../...//'. CVSS score: 6.5/10. Published 2026-08-06.

How severe is CVE-2026-66695?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Path Traversal in Boldgrid W3 Total Cache

CVE-2026-66695

Unauthenticated Path Traversal in W3 Total Cache <= 2.10.2 versions.

Published 2026-08-06 · last modified 2026-10-24.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (34.9th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Boldgrid W3 Total Cache

Weakness classification (CWE)

CWE-35 — Path Traversal: '.../...//'

References

patchstack.com/database/wordpress/plugin/w3-total-cache/vulnerability/wordpress… (vdb-entry)

Frequently asked questions

What is CVE-2026-66695?: CVE-2026-66695 is a medium-severity vulnerability in Boldgrid W3 Total Cache, classified under Path Traversal: '.../...//'. CVSS score: 6.5/10. Published 2026-08-06.
How severe is CVE-2026-66695?: Medium severity. CVSS v3 base score is 6.5 out of 10.