CVE Explorer
CVE-2026-45399
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, any authenticated user with low privileges can enumerate active background tasks across the system and stop tasks belonging to other users via the GET /api/tasks and POST /api/tasks/stop/{task_id} methods. This allows a casual user to disrupt system-wide chat usage by continuously canceling other users' active tasks. This is a real authorization vulnerability affecting integrity and
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"open-webui","vendor":"open-webui","versions":[{"status":"affected","version":"< 0.9.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:9c1267ffffbd37e40c10fd2f6871018617078ef300b54520f5147c65a721172c · sha256:1787f3c7adc38872… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:9c1267ffffbd37e40c10fd2f6871018617078ef300b54520f5147c65a721172c · sha256:1787f3c7adc38872… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:9c1267ffffbd37e40c10fd2f6871018617078ef300b54520f5147c65a721172c · sha256:1787f3c7adc38872… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"name":"https://github.com/open-webui/open-webui/security/advisories/GHSA-8jjp-r2w2-4v22","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-8jjp-r2w2-4v22"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9c1267ffffbd37e40c10fd2f6871018617078ef300b54520f5147c65a721172c · sha256:1787f3c7adc38872… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-8jjp-r2w2-4v22"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9c1267ffffbd37e40c10fd2f6871018617078ef300b54520f5147c65a721172c · sha256:1787f3c7adc38872… · /containers/adp/0/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.