CVE-2026-87996
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.1, SafePlaywrightURLLoader in backend/open_webui/retrieval/web/utils.py validated a user-controlled hostname in Python and then let the Playwright browser resolve it again in the sync and async request interceptors. An authenticated user controlling authoritative DNS could return a public address to validation and an internal address to the browser, exposing responses from internal services or cloud metadata through web search or URL ingestion. This issue is fixed in version 0.11.1.
Scoring
- Severity
- HIGH
- CVSS base score
- 7.7
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- CWE
- CWE-367, CWE-918
- Published
- 2026-09-09
- Last modified
- 2026-09-09
Affected products
- open-webui open-webui
Weakness type
Related vulnerabilities
- CVE-2026-79968 — Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to...
- CVE-2026-79730 — Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to...
- CVE-2026-87523 — Race condition in DataTransfer in Google Chrome prior to 153.0.8010.36 allowed a remote attacker...
- CVE-2026-87457 — Race condition in Updater in Google Chrome on on Windows prior to 153.0.8010.36 allowed a local...
- CVE-2026-87433 — Race condition in FileAPI in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had...
- CVE-2026-87554 — Race condition in Chromoting in Google Chrome on on Windows prior to 153.0.8010.36 allowed a local...
- CVE-2026-87517 — Race condition in Mobile in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote...
- CVE-2026-78464 — Windows MIDI Service Module Elevation of Privileges Vulnerability