CVE-2026-105208: ZITADEL before 4.17.3 Session Hijacking via Forgeable IdP Intent Tokens
Fixed in 4.17.3 · Affected: zitadel before 4.17.3 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 0% of scored CVEs
DescriptionCVE.org
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.
Affected products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- zitadel · zitadelfrom 4.0.0 before 4.17.3
- zitadel · zitadelfrom 3.0.0 up to and including 3.4.15
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- zitadel
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-105208 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.