CVE-2026-45386

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, Pin/Unpin is a write operation (modifies the message's is_pinned , pinned_by, pinned_at fields), but in standard channels it only checks read permission, allowing users with read-only access to pin/unpin any message. This vulnerability is fixed in 0.9.5.

PUBLISHED Reserved 2026-05-12 | Published 2026-05-15 | Updated 2026-05-19 | Assigner GitHub_M

Problem types

CWE-639: Authorization Bypass Through User-Controlled Key

Product status

References

github.com/...-webui/security/advisories/GHSA-5gc6-xhv4-2wg6 exploit

github.com/...-webui/security/advisories/GHSA-5gc6-xhv4-2wg6

cve.org (CVE-2026-45386)

nvd.nist.gov (CVE-2026-45386)

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