Open redirect in user_saml via RelayState parameter in Nextcloud User Saml
Priority LOW 28CWE-601Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-601.
Summary
Nextcloud User Saml is an app for authenticating Nextcloud users using SAML. In affected versions users can be given a link to the Nextcloud server and end up on a uncontrolled thirdparty server. It is recommended that the User Saml app is upgraded to version 5.1.5, 5.2.5, or 6.0.1. There are no known workarounds for this issue.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00454 39th percentileScored 2026-11-07
Fix Fixed security-advisories (nextcloud): 5.1.5, 5.2.5, 6.0.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| nextcloud | security-advisories | 5.0.0 to before 5.1.5; 5.2.0 to before 5.2.5; 6.0.0 to before 6.0.1 | 5.1.5, 5.2.5, 6.0.1 | Patch available | CNA |
- security-advisories Vendornextcloud Affected 5.0.0 to before 5.1.5; 5.2.0 to before 5.2.5; 6.0.0 to before 6.0.1 Fixed in 5.1.5, 5.2.5, 6.0.1 Patch available CNA
Remediation
- Fix · CNA security-advisories (nextcloud) Fixed in 5.1.5, 5.2.5, 6.0.1
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2024-22400
References
Sources
- CVE-2024-22400 · CVE Program
- CVE-2024-22400 · NVD
- FIRST EPSS
- CVE-2024-22400 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences