CVE-2026-87999
Last modified
CVE-2026-87999 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.11.1, POST /api/v1/retrieval/process/web and POST /api/v1/retrieval/process/web/search in backend/open_webui/retrieval/web/utils.py treated Python's globally routable address classification as proof that a destination was external. EPSS estimates a 0.22% chance of exploitation in the next 30 days.
Description
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.11.1, POST /api/v1/retrieval/process/web and POST /api/v1/retrieval/process/web/search in backend/open_webui/retrieval/web/utils.py treated Python's globally routable address classification as proof that a destination was external. An authenticated user could make an Azure-hosted instance fetch and return content from 168.63.129.16, the Azure platform channel, as well as other reserved ranges that the standard classification did not reject. This issue is fixed in version 0.11.1.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| open-webui | open-webui | < 0.11.1 |
References
Timeline
- Published
- Last Modified
- Status
- Undergoing Analysis
Frequently Asked Questions
What is CVE-2026-87999?
How severe is CVE-2026-87999?
How do I fix CVE-2026-87999?
How Strix Helps
- One Click Account Takeover in GranolaHow a notification link broke out of Electron and led to a one-click account takeover.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-8798In Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 2.1.3…8.7
- CVE-2026-87994Open WebUI is an extensible, feature-rich, and user-friendly…4.3
- CVE-2026-87995Open WebUI is an extensible, feature-rich, and user-friendly…8.7
- CVE-2026-87996Open WebUI is an extensible, feature-rich, and user-friendly…7.7
- CVE-2026-87997Open WebUI is an extensible, feature-rich, and user-friendly…4.3
- CVE-2026-87998Open WebUI is an extensible, feature-rich, and user-friendly…7.1
- CVE-2026-8800Incorrect Authorization vulnerability in Progress MOVEit Tra…8.8
- CVE-2026-88000Open WebUI is an extensible, feature-rich, and user-friendly…6.5
- CVE-2026-88001Open WebUI is an extensible, feature-rich, and user-friendly…5
- CVE-2026-88002Open WebUI is an extensible, feature-rich, and user-friendly…6.5
- CVE-2026-88004Traefik is an open source HTTP reverse proxy and load balanc…7
- CVE-2026-88005Open WebUI is an extensible, feature-rich, and user-friendly…6.5
Are you affected by CVE-2026-87999?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST