CVE-2018-15121

8.8 highEPSS 0.5%

High (8.8) in auth0. EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.0

8.8 high

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-31)
CWE: CWE-352
Published: 2018-08-29
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

auth0:aspnet
auth0:aspnet-owin

References

https://auth0.com/docs/security/bulletins/cve-2018-15121
https://auth0.com/docs/security/bulletins/cve-2018-15121

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