CVE-2026-54020
- Source
- https://cve.org/CVERecord?id=CVE-2026-54020
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54020.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-54020
- Aliases
- Published
- 2026-08-04T20:38:27.215Z
- Modified
- 2026-08-10T11:40:37.434245854Z
- Severity
-
- 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
- Summary
- Open WebUI: DNS Rebinding SSRF Bypass
- Details
-
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.11.0, Open WebUI resolved a hostname during URL validation and rejected private, loopback, and link-local addresses, but the HTTP clients resolved the hostname again at connection time. An authenticated attacker who controlled authoritative DNS for a submitted hostname could answer with a public address during validation and an internal one during connection, reaching cloud metadata, loopback admin APIs, or internal services through URL ingest, chat image_url fetches, image editing, or OAuth profile-picture fetches, with most paths returning the response to the attacker and the OAuth path forwarding the OAuth access token. This issue is fixed in 0.11.0.
- Database specific
{ "cna_assigner": "GitHub_M", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54020.json", "cwe_ids": [ "CWE-367", "CWE-918" ] }- References