CVE-2026-85181
CVE-2026-85181
CAT uses Java String.hashCode as the sole integrity check for session cookies without server-side keying, allowing attackers to forge valid checksums offline. Attackers can set the x-forwarded-for header to bypass IP binding validation and create admin sessions with full configuration access.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-85181?
- CVE-2026-85181 is a critical-severity vulnerability, classified under Reliance on Cookies without Validation and Integrity Checking. CVSS score: 9.8/10. Published 2026-09-03.
- How severe is CVE-2026-85181?
- Critical severity. CVSS v3 base score is 9.8 out of 10.