Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
ZITADEL 4.x before 4.19.2 and 3.x through 3.4.15 contains an authentication bypass in the SAML identity-provider intent callback, which verifies the assertion signature using the provider named in the request URL but resolves the user from the login intent without checking they match. Attackers with organization-administrator permission can register a SAML provider with their own signing key to obtain authenticated sessions as any user linked to another SAML provider on the instance, including in other organizations.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
CVE-2026-109372 affects ZITADEL SAML federation. A provider-confusion flaw can allow cross-organisation account takeover where the required admin permissions and multi-provider configuration are present. Analysis: https://github.com/alan-turing-institute/cyber-threat-observatory/blob/main/reports/2026-10-12/TIER_2_CVE-2026-109372.md #CyberSecurity #SAML #DigitalIdentity