CVE-2026-82465
Medium · 5.3CVSS
5.3
EPSS
0.3%
Published
Aug 29, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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