CVE-2026-45386

CVE Enrichment

CVSS: 4.3 MEDIUM
EPSS: 0.29%
EPSS Percentile: 19.42%
CISA KEV: Not listed

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: security-advisories@github.com
Published: 16-May-2026 04:16
Last Modified: 17-Jun-2026 17:51
EPSS Date: 2026-10-11
CWE: CWE-639

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:L /
                            UI:N /
                            S:U /
                            C:N /
                            I:L /
                            A:N

Affected Products / Versions

openwebui / open_webui
Version / affected range: * · before (exclusive) 0.9.5
cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*

References

134c704f-9b21-4f2e-91b3-4a467353bcc0

Last enrichment sync: 12-Oct-2026 01:42
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

CVE-2026-45386: an improper access control vulnerability in Open WebUI Kaspersky Reports Rising Vulnerability Disclosures and Early Exploit Releases in Q2 2026

CVE (26)

People (2)

Vendors (2)

Products (15)

Tools (4)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.