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.

Vulnerability in Boldgrid W3 Total Cache

CVE-2026-57623

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

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.

Affected products

Boldgrid W3 Total Cache — versions n/a

Weakness classification (CWE)

CWE-1284 — Improper Validation of Specified Quantity in Input

References

audit@patchstack.com (vdb-entry)

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.