CVE-2026-85181
CAT through 3.1.0 Session Cookie Forgery via Unkeyed hashCode Checksum
CVSS 4.0 9.3 CRITICALCVSS 3.1 9.8 CRITICALCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-85181
PublishedCAT 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.
Read the publisher's advisoryAffected versions, risk and source history
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CVE-2026-85181 · CVE overview and exploitation status
cve-program · CVE-2026-85181
- https://github.com/dianping/cat/issues/2384
- https://github.com/dianping/cat
- https://github.com/dianping/cat/blob/3.1.0/cat-home/src/main/java/com/dianping/cat/system/page/login/service/TokenBuilder.java
- https://github.com/dianping/cat/blob/3.1.0/cat-home/src/main/java/com/dianping/cat/util/HttpUtils.java
- https://www.vulncheck.com/advisories/cat-through-3.1.0-session-cookie-forgery-via-unkeyed-hashcode-checksum
Related changes
Linked by CVE identifierNo related changes are available here.