Vulnerability in Boldgrid W3 Total Cache

CVE-2026-57623

Unauthenticated Arbitrary Code Execution in W3 Total Cache <= 2.9.4 versions.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (42.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.4% 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-2026-57623: held from 0.005 to 0.005.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-57623?
CVE-2026-57623 is a critical-severity vulnerability in Boldgrid W3 Total Cache, classified under Improper Validation of Specified Quantity in Input. CVSS score: 9.0/10. Published 2026-07-02.
How severe is CVE-2026-57623?
Critical severity. CVSS v3 base score is 9.0 out of 10.