What is CVE-2026-66620?

CVE-2026-66620 is a high-severity vulnerability in Derek Herman Optiontree, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2026-08-18.

How severe is CVE-2026-66620?

High severity. CVSS v3 base score is 7.2 out of 10.

Deserialization in Derek Herman Optiontree

CVE-2026-66620

Editor PHP Object Injection in OptionTree <= 2.7.3 versions.

Vulnerability class: Insecure Deserialization

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Derek Herman Optiontree

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2026-66620?: CVE-2026-66620 is a high-severity vulnerability in Derek Herman Optiontree, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2026-08-18.
How severe is CVE-2026-66620?: High severity. CVSS v3 base score is 7.2 out of 10.