An issue was discovered in Auth0 auth0-aspnet and auth0-aspnet-owin.
Priority LOW 39CWE-352Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-352.
Summary
An issue was discovered in Auth0 auth0-aspnet and auth0-aspnet-owin. Affected packages do not use or validate the state parameter of the OAuth 2.0 and OpenID Connect protocols. This leaves applications vulnerable to CSRF attacks during authentication and authorization operations.
Why it matters now
EPSS 0.00486 42nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | Auth0-ASPNET-Owin (NuGet) | up to 2.3.2 | — | No fix listed | GHSA-mmhr-3jr7-qj2p |
| — | auth0-aspnet (NuGet) | up to 2.1.1 | — | No fix listed | GHSA-mmhr-3jr7-qj2p |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- Auth0-ASPNET-Owin (NuGet) Vendor— Affected up to 2.3.2 Fixed in — No fix listed GHSA-mmhr-3jr7-qj2p
- auth0-aspnet (NuGet) Vendor— Affected up to 2.1.1 Fixed in — No fix listed GHSA-mmhr-3jr7-qj2p
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-15121
- 2026-10-03 Alias added: GHSA-mmhr-3jr7-qj2p
References
Sources
- CVE-2018-15121 · CVE Program
- CVE-2018-15121 · NVD
- FIRST EPSS
- GHSA-mmhr-3jr7-qj2p · GitHub Advisory Database · CC BY 4.0
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