What is CVE-2026-94121?

CVE-2026-94121 is a high-severity vulnerability in 10web Booster – Website Speed Optimization, Cache & Page Optimizer, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-09-30.

How severe is CVE-2026-94121?

High severity. CVSS v3 base score is 8.8 out of 10.

Deserialization in 10web Booster – Website Speed Optimization, Cache & Page Optimizer

CVE-2026-94121

Contributor PHP Object Injection in 10Web Booster – Website speed optimization, Cache & Page Speed optimizer <= 2.33.6 versions.

Vulnerability class: Insecure Deserialization

Published 2026-09-30 · last modified 2026-09-30.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

10web Booster – Website Speed Optimization, Cache & Page Optimizer

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

patchstack.com/database/wordpress/plugin/tenweb-speed-optimizer/vulnerability/w… (vdb-entry)

Frequently asked questions

What is CVE-2026-94121?: CVE-2026-94121 is a high-severity vulnerability in 10web Booster – Website Speed Optimization, Cache & Page Optimizer, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-09-30.
How severe is CVE-2026-94121?: High severity. CVSS v3 base score is 8.8 out of 10.