Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L L R C L L N 5.4 .0023 14.2 —
AFFECTED Product Versions Fixed open-webui < 0.9.6 – —
TIMELINE Jun 11 Reserved by GitHub_M Jun 23 EXPLOIT PUBLISHED — CVE-2026-54011 (open-webui). Public exploit reference added. Jun 23 Published (CNA: GitHub_M)
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6,Open WebUI renders Mermaid blocks from Markdown files in the file preview panel and inserts the generated SVG into the DOM using innerHTML. Because Mermaid is configured with securityLevel: 'loose', attacker-controlled Mermaid content can be rendered unsafely in this flow. A working payload was validated through the Markdown preview path, resulting in JavaScript execution in the victim’s browser under the application origin. This vulnerability is fixed in 0.9.6.
| Date | Event | Detail |
|---|---|---|
| June 11, 2026 | Reserved | Reserved by GitHub_M |
| June 23, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-54011 (open-webui). Public exploit reference added. |
| June 23, 2026 | Published | Published (CNA: GitHub_M) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| open-webui | open-webui | — | < 0.9.6 | — |
Authoritative record: CVE-2026-54011 at cve.org
Vendors: open-webui
Weaknesses: CWE-79
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-54011 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.