CVE-2026-105208: high-severity vulnerability in zitadel
ZITADEL before 4.17.3 Session Hijacking via Forgeable IdP Intent Tokens
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.1%
exploitation probability
0.1%top 100% of all CVEs
observed exploitation
nono source reports it
ZITADEL 4.x before 4.17.3 and 3.x through 3.4.15 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.
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Affected products
zitadel · zitadelRelated CVEs — zitadel
In the same product, most dangerous first.
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