What is CVE-2026-84099?

CVE-2026-84099 is a high-severity vulnerability in Wpstorecart, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2026-09-12.

How severe is CVE-2026-84099?

High severity. CVSS v3 base score is 8.1 out of 10.

Deserialization in Wpstorecart

CVE-2026-84099

The wpstorecart WordPress plugin through 5.0.7 does not prevent direct, unauthenticated access to a bundled add-on that deserializes user-supplied input without restricting the permitted classes, allowing unauthenticated attackers to inject arbitrary PHP objects, which may be escalated further when a suitable gadget chain is present on the site.

Vulnerability class: Insecure Deserialization

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Unknown Wpstorecart

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-84099?: CVE-2026-84099 is a high-severity vulnerability in Wpstorecart, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2026-09-12.
How severe is CVE-2026-84099?: High severity. CVSS v3 base score is 8.1 out of 10.