Technology · Open WebUI
Open WebUI vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 18 vulnerabilities in Open WebUI: 0 in the last 7 days and 17 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-109300, was published on 12 October 2026. 17 vulnerabilities in the last four weeks, up from none in the four before.
- Last 7 days
- 0
- Last 90 days
- 17
- Critical, all time
- 0
- Exploited in the wild
- 0
About Open WebUI
Web interface for interacting with large language models and AI assistants.
Latest Open WebUI vulnerabilities
- CVE-2026-109300: Open WebUI stored cross-site scripting in Markdown renderermediumCVSS 4.6EPSS 0.2%
- CVE-2026-109299: Open WebUI denial of service in recurrence rule validationmediumCVSS 6.5EPSS 0.4%
- CVE-2026-109298: Open WebUI regex denial of service in file search toolsmediumCVSS 6.5EPSS 0.4%
- CVE-2026-109297: Open WebUI automation recurrence-rule denial of servicemediumCVSS 6.5EPSS 0.3%
- CVE-2026-109296: Open WebUI missing authorization in model provider routesmediumCVSS 4.3EPSS 0.3%
- CVE-2026-109295: Open WebUI regular expression denial of service in file searchmediumCVSS 6.5EPSS 0.3%
- CVE-2026-109294: Open WebUI memory exhaustion via compressed remote imagemediumCVSS 6.5EPSS 0.3%
- CVE-2026-109293: Open WebUI tool source code disclosure via export endpointmediumCVSS 6.5EPSS 0.3%
- CVE-2026-109292: Open WebUI session cookie leakage in OAuth modemediumCVSS 6.8EPSS 0.3%
- CVE-2026-109291: Open WebUI stored cross-site scripting in citation embed_urlhighCVSS 7.3EPSS 0.3%
- CVE-2026-109290: Open WebUI stored cross-site scripting in DOCX previewhighCVSS 7.3EPSS 0.3%
- CVE-2026-109289: Open WebUI improper session revocation in terminal WebSocketmediumCVSS 6.3EPSS 0.2%
- CVE-2026-109288: Open WebUI stored cross-site scripting in markdown link renderingmediumCVSS 6.4EPSS 0.2%
- CVE-2026-109287: Open WebUI authorization flaw in knowledge base file listingmediumCVSS 4.3EPSS 0.2%
- CVE-2026-109285: Open WebUI improper access control in knowledge base file handlingmediumCVSS 5EPSS 0.2%
- CVE-2026-109284: Open WebUI improper authorization in chat fork handlermediumCVSS 4.3EPSS 0.2%
- CVE-2026-109283: Open WebUI authorization bypass in OAuth token exchangemediumCVSS 5.4EPSS 0.2%
- CVE-2025-65959: Open WebUI stored DOM XSS in Note PDF downloadhighCVSS 8.7EPSS 0.2%
Most severe Open WebUI vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2025-65959: Open WebUI stored DOM XSS in Note PDF downloadhighCVSS 8.7EPSS 0.2%
- CVE-2026-109291: Open WebUI stored cross-site scripting in citation embed_urlhighCVSS 7.3EPSS 0.3%
- CVE-2026-109290: Open WebUI stored cross-site scripting in DOCX previewhighCVSS 7.3EPSS 0.3%
- CVE-2026-109292: Open WebUI session cookie leakage in OAuth modemediumCVSS 6.8EPSS 0.3%
- CVE-2026-109298: Open WebUI regex denial of service in file search toolsmediumCVSS 6.5EPSS 0.4%
- CVE-2026-109299: Open WebUI denial of service in recurrence rule validationmediumCVSS 6.5EPSS 0.4%
- CVE-2026-109297: Open WebUI automation recurrence-rule denial of servicemediumCVSS 6.5EPSS 0.3%
- CVE-2026-109295: Open WebUI regular expression denial of service in file searchmediumCVSS 6.5EPSS 0.3%
- CVE-2026-109294: Open WebUI memory exhaustion via compressed remote imagemediumCVSS 6.5EPSS 0.3%
- CVE-2026-109293: Open WebUI tool source code disclosure via export endpointmediumCVSS 6.5EPSS 0.3%
Vulnerabilities per week
17 vulnerabilities in the last four weeks, up from none in the four before. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 17 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Open WebUI vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/open-webui-open-webui)<a href="https://junglewise.ai/threats/technologies/open-webui-open-webui"><img src="https://junglewise.ai/threats/technologies/open-webui-open-webui/badge.svg" alt="Open WebUI vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/open-webui-open-webui.json, and this page as text at https://junglewise.ai/threats/technologies/open-webui-open-webui.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Open WebUI vulnerabilities", https://junglewise.ai/threats/technologies/open-webui-open-webui, 12 November 2026.