CVE-2026-105208 - ZITADEL before 4.17.3 Session Hijacking via Forgeable IdP Intent Tokens
Brief
CVE ID : CVE-2026-105208
Published : Oct. 4, 2026, 3:16 p. m.
- 4 hours, 15 minutes ago
Description : ZITADEL 4. x before 4.
- 3 and 3. x through 3.
- 15 protects IdP intent tokens with unauthenticated, malleable encryption, allowing authenticated users to tamper with their own token so it is accepted for another user's external login intent.
An attacker who predicts a victim's in-flight intent identifier and wins a timing race can call /v2/idp_intents or /v2/sessions to steal the victim's IdP tokens or hijack their session.
Severity: 8.7
- HIGH
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