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CVE-2026-45665

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, a Stored Cross-Site Scripting (XSS) vulnerability exists in the Banner component due to an improper sanitization order (specifically, DOMPurify is executed before the marked library). This vulnerability allows a compromised or malicious administrator to plant a malicious payload in the global banner. Crucially, this vector enables Privilege Escalation, as the malicious banner is ren
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7bae3f7a5291b29106f07ae5277e59bd1f77ba18c7ddd3ae33b560f8fba5dc54
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":"< 0.8.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d35f40624b8286bf0becb6bfe98bca6d02fd4c3c40fdb04ae7d6aaec97229537 · sha256:280ece07bcae0e32… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d35f40624b8286bf0becb6bfe98bca6d02fd4c3c40fdb04ae7d6aaec97229537 · sha256:280ece07bcae0e32… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d35f40624b8286bf0becb6bfe98bca6d02fd4c3c40fdb04ae7d6aaec97229537 · sha256:280ece07bcae0e32… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-cqp4-qqvg-3787"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d35f40624b8286bf0becb6bfe98bca6d02fd4c3c40fdb04ae7d6aaec97229537 · sha256:280ece07bcae0e32… · /containers/adp/0/references/0
{"name":"https://github.com/open-webui/open-webui/security/advisories/GHSA-cqp4-qqvg-3787","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-cqp4-qqvg-3787"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d35f40624b8286bf0becb6bfe98bca6d02fd4c3c40fdb04ae7d6aaec97229537 · sha256:280ece07bcae0e32… · /containers/cna/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.

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