Denied Host Validation Bypass in Zitadel Actions
Priority MEDIUM 42CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
Zitadel is open-source identity infrastructure software. Versions prior to 2.64.1, 2.63.6, 2.62.8, 2.61.4, 2.60.4, 2.59.5, and 2.58.7 have a flaw in the URL validation mechanism of Zitadel actions allows bypassing restrictions intended to block requests to localhost (127.0.0.1). The isHostBlocked check, designed to prevent such requests, can be circumvented by creating a DNS record that resolves to 127.0.0.1. This enables actions to send requests to localhost despite the intended security measures. This vulnerability potentially allows unauthorized access to unsecured internal endpoints, which may contain sensitive information or functionalities. Versions 2.64.1, 2.63.6, 2.62.8, 2.61.4, 2.60.4, 2.59.5, and 2.58.7 contain a patch. No known workarounds are available.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00652 51st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed zitadel (zitadel): 2.64.1, 2.63.6, 2.62.8 +4github.com/zitadel/zitadel (Go): 2.64.1, 2.63.6, 2.62.8 +6
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| zitadel | zitadel | 2.64 to before 2.64.1; 2.63 to before 2.63.6; 2.62 to before 2.62.8; 2.61 to before 2.61.4; 2.60 to before 2.60.4; 2.59 to before 2.59.5; before 2.58.7 | 2.64.1, 2.63.6, 2.62.8, 2.61.4, 2.60.4, 2.59.5, 2.58.7 | Patch available | CNA |
| — | github.com/zitadel/zitadel (Go) | 2.64.0 to before 2.64.1 | 2.64.1 | Patch available | GHSA-6cf5-w9h3-4rqv |
| — | github.com/zitadel/zitadel (Go) | 2.63.0 to before 2.63.6 | 2.63.6 | Patch available | GHSA-6cf5-w9h3-4rqv |
| — | github.com/zitadel/zitadel (Go) | 2.62.0 to before 2.62.8 | 2.62.8 | Patch available | GHSA-6cf5-w9h3-4rqv |
| — | github.com/zitadel/zitadel (Go) | 2.61.0 to before 2.61.4 | 2.61.4 | Patch available | GHSA-6cf5-w9h3-4rqv |
| — | github.com/zitadel/zitadel (Go) | 2.60.0 to before 2.60.4 | 2.60.4 | Patch available | GHSA-6cf5-w9h3-4rqv |
| — | github.com/zitadel/zitadel (Go) | 2.59.0 to before 2.59.5 | 2.59.5 | Patch available | GHSA-6cf5-w9h3-4rqv |
| — | github.com/zitadel/zitadel (Go) | 1.80.1 to before 2.58.7 | 2.58.7 | Patch available | GHSA-6cf5-w9h3-4rqv |
| — | github.com/zitadel/zitadel (Go) | before 0.0.0-20241022141644-79fb4cc1cc6e | 0.0.0-20241022141644-79fb4cc1cc6e | Patch available | GHSA-6cf5-w9h3-4rqv |
| — | github.com/zitadel/zitadel (Go) | 0.0.0 to before 1.80.0-v2.20.0.20241022141644-79fb4cc1cc6e | 1.80.0-v2.20.0.20241022141644-79fb4cc1cc6e | Patch available | GHSA-6cf5-w9h3-4rqv |
- zitadel Vendorzitadel Affected 2.64 to before 2.64.1; 2.63 to before 2.63.6; 2.62 to before 2.62.8; 2.61 to before 2.61.4; 2.60 to before 2.60.4; 2.59 to before 2.59.5; before 2.58.7 Fixed in 2.64.1, 2.63.6, 2.62.8, 2.61.4, 2.60.4, 2.59.5, 2.58.7 Patch available CNA
- github.com/zitadel/zitadel (Go) Vendor— Affected 2.64.0 to before 2.64.1 Fixed in 2.64.1 Patch available GHSA-6cf5-w9h3-4rqv
- github.com/zitadel/zitadel (Go) Vendor— Affected 2.63.0 to before 2.63.6 Fixed in 2.63.6 Patch available GHSA-6cf5-w9h3-4rqv
- github.com/zitadel/zitadel (Go) Vendor— Affected 2.62.0 to before 2.62.8 Fixed in 2.62.8 Patch available GHSA-6cf5-w9h3-4rqv
- github.com/zitadel/zitadel (Go) Vendor— Affected 2.61.0 to before 2.61.4 Fixed in 2.61.4 Patch available GHSA-6cf5-w9h3-4rqv
- github.com/zitadel/zitadel (Go) Vendor— Affected 2.60.0 to before 2.60.4 Fixed in 2.60.4 Patch available GHSA-6cf5-w9h3-4rqv
- github.com/zitadel/zitadel (Go) Vendor— Affected 2.59.0 to before 2.59.5 Fixed in 2.59.5 Patch available GHSA-6cf5-w9h3-4rqv
- github.com/zitadel/zitadel (Go) Vendor— Affected 1.80.1 to before 2.58.7 Fixed in 2.58.7 Patch available GHSA-6cf5-w9h3-4rqv
- github.com/zitadel/zitadel (Go) Vendor— Affected before 0.0.0-20241022141644-79fb4cc1cc6e Fixed in 0.0.0-20241022141644-79fb4cc1cc6e Patch available GHSA-6cf5-w9h3-4rqv
- github.com/zitadel/zitadel (Go) Vendor— Affected 0.0.0 to before 1.80.0-v2.20.0.20241022141644-79fb4cc1cc6e Fixed in 1.80.0-v2.20.0.20241022141644-79fb4cc1cc6e Patch available GHSA-6cf5-w9h3-4rqv
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:* | before 2.58.7; 2.59.0 to before 2.59.5; 2.60.0 to before 2.60.4; 2.61.0 to before 2.61.4; 2.62.0 to before 2.62.8; 2.63.0 to before 2.63.6; 2.64.0 to before 2.64.1 | Vulnerable | zitadel |
- cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:* Versions before 2.58.7; 2.59.0 to before 2.59.5; 2.60.0 to before 2.60.4; 2.61.0 to before 2.61.4; 2.62.0 to before 2.62.8; 2.63.0 to before 2.63.6; 2.64.0 to before 2.64.1 Vulnerable ·zitadel
Remediation
- Fix · CNA zitadel (zitadel) Fixed in 2.64.1, 2.63.6, 2.62.8, 2.61.4, 2.60.4, 2.59.5, 2.58.7
- Fix · GHSA-6cf5-w9h3-4rqv github.com/zitadel/zitadel (Go) Fixed in 2.64.1 Advisory →
- Fix · GHSA-6cf5-w9h3-4rqv github.com/zitadel/zitadel (Go) Fixed in 2.63.6 Advisory →
- Fix · GHSA-6cf5-w9h3-4rqv github.com/zitadel/zitadel (Go) Fixed in 2.62.8 Advisory →
- Fix · GHSA-6cf5-w9h3-4rqv github.com/zitadel/zitadel (Go) Fixed in 2.61.4 Advisory →
- Fix · GHSA-6cf5-w9h3-4rqv github.com/zitadel/zitadel (Go) Fixed in 2.60.4 Advisory →
- Fix · GHSA-6cf5-w9h3-4rqv github.com/zitadel/zitadel (Go) Fixed in 2.59.5 Advisory →
- Fix · GHSA-6cf5-w9h3-4rqv github.com/zitadel/zitadel (Go) Fixed in 2.58.7 Advisory →
- Fix · GHSA-6cf5-w9h3-4rqv github.com/zitadel/zitadel (Go) Fixed in 0.0.0-20241022141644-79fb4cc1cc6e Advisory →
- Fix · GHSA-6cf5-w9h3-4rqv github.com/zitadel/zitadel (Go) Fixed in 1.80.0-v2.20.0.20241022141644-79fb4cc1cc6e Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2024-49753
- 2026-10-03 Alias added: GHSA-6cf5-w9h3-4rqv
- 2026-10-14 EPSS moved to the 50th–90th percentile
References
Other 8
- https://github.com/zitadel/zitadel/releases/tag/v2.58.7
- https://github.com/zitadel/zitadel/releases/tag/v2.59.5
- https://github.com/zitadel/zitadel/releases/tag/v2.60.4
- https://github.com/zitadel/zitadel/releases/tag/v2.61.4
- https://github.com/zitadel/zitadel/releases/tag/v2.62.8
- https://github.com/zitadel/zitadel/releases/tag/v2.63.6
- https://github.com/zitadel/zitadel/releases/tag/v2.64.1
- https://github.com/zitadel/zitadel
More Zitadel vulnerabilities
- 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-2025-39554 Zitadel Bypass Second Authentication Factor CVSS 4.0HIGH 8.7
- 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
Sources
- CVE-2024-49753 · CVE Program
- CVE-2024-49753 · NVD
- FIRST EPSS
- GHSA-6cf5-w9h3-4rqv · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences