Auth bypass in Rocket.chat
CVE-2026-58066
Rocket.Chat's SAML SSO before versions 8.7.0, 8.6.1, 8.5.2, 8.4.5, 8.3.7, 8.2.7, 8.1.7, 8.0.8, and 7.10.14 verified XML signatures but did not bind the validated signature to samlp:Response / saml:Assertion. An attacker could submit a wrap…
Vulnerability class: Broken Authentication
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Rocket.chat — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-58066?
- CVE-2026-58066 is a critical-severity vulnerability in Rocket.chat, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-07-30.
- How severe is CVE-2026-58066?
- Critical severity. CVSS v3 base score is 9.8 out of 10.