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TI-2026-67544 Aliases CVE-2026-105208GHSA-xv85-7fx2-46j9

ZITADEL before 4.17.3 Session Hijacking via Forgeable IdP Intent Tokens

Priority LOW 38CWE-649Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
High
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00081 0th percentileScored 2026-11-07
Fix Fixed zitadel (zitadel): 4.17.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
zitadelzitadel4.0.0 to before 4.17.34.17.3Patch availableCNA
zitadelzitadel3.0.0 – 3.4.15—No fix listedCNA
  • zitadel Vendorzitadel Affected 4.0.0 to before 4.17.3 Fixed in 4.17.3 Patch available CNA
  • zitadel Vendorzitadel Affected 3.0.0 – 3.4.15 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:*——zitadel
  • cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:* Versions — — ·zitadel

Remediation

  • Fix · CNA zitadel (zitadel) Fixed in 4.17.3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    zitadel 4.17.3

    3 records Highest priority Priority MEDIUM 1 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-67543 ZITADEL before 4.17.3 Account Takeover via External IdP LinkingPriority MEDIUM 48
    • TI-2026-67542 ZITADEL before 4.17.3 Cross-Organization Authentication Method Enumeration via User ServicePriority LOW 24
    Show all 3 records →

Timeline

  1. 2026-10-04 Threatist record created from CVE-2026-105208
  2. 2026-10-04 Alias added: GHSA-xv85-7fx2-46j9
  3. 2026-10-05 CISA SSVC decision points changed
  4. 2026-10-05 Priority changed: MEDIUM → LOW
  5. 2026-10-29 Affected versions changed · CNA

References

Advisory 1

  • TI-2024-26607 ZITADEL Vulnerable to Session Information Leakage CVSS 3.1MEDIUM 6.5
  • TI-2026-67551 ZITADEL before 4.16.2 Account Pre-Hijacking via Forged External IdP Callback CVSS 4.0CRITICAL 9.3
  • TI-2026-67543 ZITADEL before 4.17.3 Account Takeover via External IdP Linking CVSS 4.0CRITICAL 9.3
  • TI-2025-41253 ZITADEL Vulnerable to Unauthenticated Full-Read SSRF via V2 Login CVSS 3.1CRITICAL 9.3
  • TI-2025-39554 Zitadel Bypass Second Authentication Factor CVSS 4.0HIGH 8.7
  • TI-2026-82647 ZITADEL Login V2 flaw lets attackers approve device authorizations CVSS 4.0HIGH 8.6
See all 77 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences