VULNERABILITY INTELLIGENCE
CVE-2026-82465
CVSS score6.9 MEDIUM
EPSS probability0.26%
CISA KEVNot currently listed
Published2026-08-29
Last modified2026-09-10
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Description
pac4j-saml before 6.5.6 does not require signature validation of SAML LogoutRequest messages in SAML2LogoutValidator.validateLogoutRequest(). When an IdP sends no SessionIndex, a session can be destroyed based solely on the NameID, allowing an unauthenticated attacker to submit an unsigned LogoutRequest with a guessed identifier (e.g., an email address used as NameID) to terminate a victim's SAML session.
Weakness classification
- CWE-345: Insufficient Verification of Data Authenticity