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TI-2025-39554 Aliases CVE-2025-64103GHSA-cfjq-28r2-4jv5

Zitadel Bypass Second Authentication Factor

Priority MEDIUM 46CWE-287Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-287.

Summary

Starting from 2.53.6, 2.54.3, and 2.55.0, Zitadel only required multi factor authentication in case the login policy has either enabled requireMFA or requireMFAForLocalUsers. If a user has set up MFA without this requirement, Zitadel would consider single factor auhtenticated sessions as valid as well and not require multiple factors. Bypassing second authentication factors weakens multifactor authentication and enables attackers to bypass the more secure factor. An attacker can target the TOTP code alone, only six digits, bypassing password verification entirely and potentially compromising accounts with 2FA enabled. This vulnerability is fixed in 4.6.0, 3.4.3, and 2.71.18.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00352 29th percentileScored 2026-11-07
Fix Fixed zitadel (zitadel): 4.6.0, 3.4.3, 2.71.18github.com/zitadel/zitadel/v2 (Go): 2.71.18+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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-rc.1 to before 4.6.0; 3.0.0-rc.1 to before 3.4.3; 2.55.0 to before 2.71.18; 2.54.3 – 2.54.10; 2.53.6 – 2.53.94.6.0, 3.4.3, 2.71.18Patch availableCNA
—github.com/zitadel/zitadel/v2 (Go)2.53.6 – 2.53.9—No fix listedGHSA-cfjq-28r2-4jv5
—github.com/zitadel/zitadel/v2 (Go)2.54.3 – 2.54.10—No fix listedGHSA-cfjq-28r2-4jv5
—github.com/zitadel/zitadel/v2 (Go)2.55.0 to before 2.71.182.71.18Patch availableGHSA-cfjq-28r2-4jv5
—github.com/zitadel/zitadel (Go)before 1.80.0-v2.20.0.20251029091250-b284f8474eed1.80.0-v2.20.0.20251029091250-b284f8474eedPatch availableGHSA-cfjq-28r2-4jv5
  • zitadel Vendorzitadel Affected 4.0.0-rc.1 to before 4.6.0; 3.0.0-rc.1 to before 3.4.3; 2.55.0 to before 2.71.18; 2.54.3 – 2.54.10; 2.53.6 – 2.53.9 Fixed in 4.6.0, 3.4.3, 2.71.18 Patch available CNA
  • github.com/zitadel/zitadel/v2 (Go) Vendor— Affected 2.53.6 – 2.53.9 Fixed in — No fix listed GHSA-cfjq-28r2-4jv5
  • github.com/zitadel/zitadel/v2 (Go) Vendor— Affected 2.54.3 – 2.54.10 Fixed in — No fix listed GHSA-cfjq-28r2-4jv5
  • github.com/zitadel/zitadel/v2 (Go) Vendor— Affected 2.55.0 to before 2.71.18 Fixed in 2.71.18 Patch available GHSA-cfjq-28r2-4jv5
  • github.com/zitadel/zitadel (Go) Vendor— Affected before 1.80.0-v2.20.0.20251029091250-b284f8474eed Fixed in 1.80.0-v2.20.0.20251029091250-b284f8474eed Patch available GHSA-cfjq-28r2-4jv5

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:*2.53.6 – 2.53.9; 2.54.3 – 2.54.10; 2.55.0 to before 2.71.18; 3.0.0 to before 3.4.3; 4.0.0 to before 4.6.0Vulnerablezitadel
  • cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:* Versions 2.53.6 – 2.53.9; 2.54.3 – 2.54.10; 2.55.0 to before 2.71.18; 3.0.0 to before 3.4.3; 4.0.0 to before 4.6.0 Vulnerable ·zitadel

Remediation

  • Fix · CNA zitadel (zitadel) Fixed in 4.6.0, 3.4.3, 2.71.18
  • Fix · GHSA-cfjq-28r2-4jv5 github.com/zitadel/zitadel/v2 (Go) Fixed in 2.71.18 Advisory →
  • Fix · GHSA-cfjq-28r2-4jv5 github.com/zitadel/zitadel (Go) Fixed in 1.80.0-v2.20.0.20251029091250-b284f8474eed Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-64103
  2. 2026-10-03 Alias added: GHSA-cfjq-28r2-4jv5

References

Patch 1

Advisory 2

Other 2

  • TI-2024-26607 ZITADEL Vulnerable to Session Information Leakage CVSS 3.1MEDIUM 6.5
  • TI-2025-41253 ZITADEL Vulnerable to Unauthenticated Full-Read SSRF via V2 Login CVSS 3.1CRITICAL 9.3
  • TI-2024-33224 Zitadel User Registration Bypass Vulnerability CVSS 3.1HIGH 7.5
  • TI-2024-31388 Service Users Deactivation not Working in Zitadel CVSS 3.1HIGH 8.1
  • TI-2026-23310 ZITADEL: Bypassing Zitadel Login Behavior and Security Policy in Login V2 CVSS 3.1HIGH 8.2
  • TI-2026-23308 ZITADEL: 1-Click Account Takeover via XSS in /saml-post Endpoint CVSS 3.1CRITICAL 9.3
See all 46 →

Sources

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