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GHSA-57Q6-FVP4-PQMM Open WebUI's API key endpoint restrictions bypassed via `x-api-key` header — full message processing on restricted endpoints

🗓️ 14 May 2026 20:21:26Reported by GoogleType 
osv
 osv🔗 osv.dev👁 9 Views

Open WebUI restricts endpoints with authorization header, but x api key bypasses restrictions.

Related
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-45339
15 May 202619:21
–attackerkb
BDU FSTEC		The vulnerability in the Open WebUI web interface, related to the mechanism for restricting access to API keys, allows attackers to bypass existing security measures and gain unauthorized access to protected information.
25 May 202600:00
–bdu_fstec
Circl		CVE-2026-45339
9 May 202619:38
–circl
CNNVD		Open WebUI 安全漏洞
15 May 202600:00
–cnnvd
CVE		CVE-2026-45339
15 May 202619:21
–cve
Cvelist		CVE-2026-45339 Open WebUI: API key endpoint restrictions bypassed via `x-api-key` header — full message processing on restricted endpoints
15 May 202619:21
–cvelist
EUVD		EUVD-2026-30612
15 May 202619:21
–euvd
Github Security Blog		Open WebUI's API key endpoint restrictions bypassed via `x-api-key` header — full message processing on restricted endpoints
14 May 202620:21
–github
NVD		CVE-2026-45339
15 May 202620:16
–nvd
OSV		CVE-2026-45339 Open WebUI: API key endpoint restrictions bypassed via `x-api-key` header — full message processing on restricted endpoints
15 May 202619:21
–osv
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16 May 2026 00:08Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.16.5
EPSS0.00309
Open WebUIendpoint restrictionsauthorization headerx api keyauthentication bypass
9