CVE
CVE-2025-64484
OAuth2-Proxy is vulnerable to header smuggling via underscore leading to potential privilege escalation in github.com/oauth2-proxy/oauth2-proxy
OAuth2-Proxy is vulnerable to header smuggling via underscore leading to potential privilege escalation in github.com/oauth2-proxy/oauth2-proxy
Package Versions Affected
Package Version
patch Availability
No items found.
Automatically patch vulnerabilities without upgrading
Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request
CVSS Version
Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
C
H
U
0
-
C
H
U
8.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Related Resources
No items found.
References
https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-vjrc-mh2v-45x6, https://nvd.nist.gov/vuln/detail/CVE-2025-64484, https://github.com/oauth2-proxy/oauth2-proxy/commit/f3f30fa976fb4bb97d6345ba4735cb6d86e24f95, https://datatracker.ietf.org/doc/html/rfc2616#section-4.2, https://datatracker.ietf.org/doc/html/rfc822#section-3.2, https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.13.0, https://github.security.telekom.com/2020/05/smuggling-http-headers-through-reverse-proxies.html, https://www.uptimia.com/questions/why-are-http-headers-with-underscores-dropped-by-nginx
Basic Information
Ecosystem
