Vulnerability Description
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 Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/dianping/cat
- https://github.com/dianping/cat/blob/3.1.0/cat-home/src/main/java/com/dianping/c
- https://github.com/dianping/cat/blob/3.1.0/cat-home/src/main/java/com/dianping/c
- https://github.com/dianping/cat/issues/2384
- https://www.vulncheck.com/advisories/cat-through-3.1.0-session-cookie-forgery-vi
FAQ
What is CVE-2026-85181?
CVE-2026-85181 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 hea...
How severe is CVE-2026-85181?
CVE-2026-85181 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-85181?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.