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CVE-2026-45349

🗓️ 19 May 2026 13:56:47Reported by redhat.comType 
redhatcve
 redhatcve
🔗 access.redhat.com👁 8 Views

CVE-2026-45349: Open WebUI allowed chat takeover via /api/chat/completions with another user's Chat ID before 0.9.0; fixed in 0.9.0.

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Refs
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CVE-2026-45349
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15 May 202619:20
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15 May 202619:20
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Open WebUI has Broken Access Control for Completions API
14 May 202620:24
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15 May 202620:16
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OSV
GHSA-GFM2-XM6C-37QC Open WebUI has Broken Access Control for Completions API
14 May 202620:24
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Positive Technologies
PT-2026-41179
14 May 202600:00
ptsecurity
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19 May 2026 13:56Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.1
EPSS0.00231
SSVC
8