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archive/Patch now/AIR-2026-0919
closedclosed 9 Sep 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-87998: Open WebUI unauthorized knowledge connection deletion

Open WebUI

Open WebUI contained an authorization flaw that allowed authenticated non-admin users to delete shared external knowledge connections. The vulnerability has been addressed by maintainers.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
7.1
EPSS
<0.01 · top 58% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
9 Sep 2026
last update
10 Sep 2026
CVE ids
CVE-2026-87998other records

Timeline · 2

  1. 9 Sep 2026CVE-2026-87998: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform.
  2. 10 Sep 2026CVE-2026-87998: Open WebUI: Non-admin users can delete admin-owned external knowledge connections via knowledge base deletion

Sources · 2

Advisories and databases

  1. 2026-09-09
    CVE-2026-87998: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-87998
  2. 2026-09-10
    CVE-2026-87998: Open WebUI: Non-admin users can delete admin-owned external knowledge connections via knowledge base deletion
    GitHub Advisory Database · github.com/advisories/GHSA-2724-6cpj-gf3v

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
open webui
dates
happened 10 Sep 2026 · first reported 9 Sep 2026
origin
GitHub Advisory Database
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 07:00Z · updated 2026-10-18 10:04Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-87998: Open WebUI unauthorized knowledge connection deletion

https://gcdradar.vercel.app/incidents/cve-2026-87998-open-webui-unauthorized-knowledge-connection · AIR-2026-0919 · closed 2026-09-09

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-09-09 (happened 2026-09-10)
- AI role: Attack on AI
- Products: Open WebUI
- CVE ids: CVE-2026-87998
- CVSS: 7.1

## Summary

Open WebUI contained an authorization flaw that allowed authenticated non-admin users to delete shared external knowledge connections. The vulnerability has been addressed by maintainers.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-09-10: CVE-2026-87998: Open WebUI: Non-admin users can delete admin-owned external knowledge connections via knowledge base deletion (https://github.com/advisories/GHSA-2724-6cpj-gf3v)
- 2026-09-09: CVE-2026-87998: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. (https://nvd.nist.gov/vuln/detail/CVE-2026-87998)

## Sources

- 2026-09-09 NVD: CVE-2026-87998: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. https://nvd.nist.gov/vuln/detail/CVE-2026-87998
- 2026-09-10 GitHub Advisory Database: CVE-2026-87998: Open WebUI: Non-admin users can delete admin-owned external knowledge connections via knowledge base deletion https://github.com/advisories/GHSA-2724-6cpj-gf3v

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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