Auth bypass in Boldgrid W3 Total Cache

CVE-2026-39595

Author Broken Access Control in W3 Total Cache <= 2.9.1 versions.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.002 (11.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-39595: held from 0.003 to 0.002.

EPSS over last 30 days · oldest: 0.003 · newest: 0.002 · change: -0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-39595?
CVE-2026-39595 is a medium-severity vulnerability in Boldgrid W3 Total Cache, classified under Missing Authorization. CVSS score: 4.7/10. Published 2026-06-17.
How severe is CVE-2026-39595?
Medium severity. CVSS v3 base score is 4.7 out of 10.