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GHSA-VJRC-MH2V-45X6 OAuth2-Proxy is vulnerable to header smuggling via underscore leading to potential privilege escalation

🗓️ 12 Nov 2025 21:42:36Reported by GoogleType 
osv
 osv🔗 osv.dev👁 6 Views

OAuth2 Proxy header smuggling via underscores enables privilege escalation; fixed in v7.13.0.

Related
Refs
ReporterTitlePublishedViews
Family
Circl		CVE-2025-64484
10 Nov 202523:25
–circl
CNNVD		OAuth2-Proxy 安全漏洞
10 Nov 202500:00
–cnnvd
CVE		CVE-2025-64484
10 Nov 202521:33
–cve
Cvelist		CVE-2025-64484 OAuth2-Proxy vulnerable to header smuggling via underscore, leading to potential privilege escalation
10 Nov 202521:33
–cvelist
EUVD		EUVD-2025-50825
12 Nov 202521:42
–euvd
Github Security Blog		OAuth2-Proxy is vulnerable to header smuggling via underscore leading to potential privilege escalation
12 Nov 202521:42
–github
NVD		CVE-2025-64484
10 Nov 202522:15
–nvd
OSV		BIT-OAUTH2-PROXY-2025-64484 OAuth2-Proxy vulnerable to header smuggling via underscore, leading to potential privilege escalation
12 Nov 202511:43
–osv
OSV		CVE-2025-64484 OAuth2-Proxy vulnerable to header smuggling via underscore, leading to potential privilege escalation
10 Nov 202521:33
–osv
OSV		GO-2025-4113 OAuth2-Proxy is vulnerable to header smuggling via underscore leading to potential privilege escalation in github.com/oauth2-proxy/oauth2-proxy
17 Nov 202519:11
–osv
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17 Nov 2025 21:48Current
6.5Medium risk
Vulners AI Score6.5
CVSS 3.18.5
EPSS0.00633
header smugglingunderscore headersprivilege escalationauthentication proxy
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