gcdRadar
archive/Patch now/AIR-2026-1077
closedclosed 15 May 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-45395: Permission Bypass in Open WebUI Tool Update Endpoint

Open WebUI

An authorization flaw in Open WebUI permits restricted users to modify server-side Python content and trigger execution. The vulnerability is fixed in version 0.9.5.

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
7.2
EPSS
<0.01 · top 62% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
15 May 2026
last update
15 May 2026
CVE ids
CVE-2026-45395other records

Timeline · 1

  1. 15 May 2026CVE-2026-45395: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline.

Sources · 1

Advisories and databases

  1. 2026-05-15
    CVE-2026-45395: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-45395

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
authorization-bypass
dates
happened 15 May 2026 · first reported 15 May 2026
origin
NVD
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 10:04Z · 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-2026-45395: Permission Bypass in Open WebUI Tool Update Endpoint

https://gcdradar.vercel.app/incidents/cve-2026-45395-permission-bypass-in-open-webui-tool-update-e · AIR-2026-1077 · closed 2026-05-15

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-05-15
- AI role: Attack on AI
- Products: Open WebUI
- CVE ids: CVE-2026-45395
- CVSS: 7.2

## Summary

An authorization flaw in Open WebUI permits restricted users to modify server-side Python content and trigger execution. The vulnerability is fixed in version 0.9.5.

## What to do

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

## Latest updates

- 2026-05-15: CVE-2026-45395: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. (https://nvd.nist.gov/vuln/detail/CVE-2026-45395)

## Sources

- 2026-05-15 NVD: CVE-2026-45395: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. https://nvd.nist.gov/vuln/detail/CVE-2026-45395

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

Related

  1. closed5.1
    Open WebUI CVE-2026-45346: Cross-Site Scripting in Open WebUI SVG Renderer

    Patch now · Disclosed · since 15 May 2026 · CVE-2026-45346

    AI
  2. closed8.1
    Open WebUI CVE-2026-45665: Stored XSS in Open WebUI Banner Component

    Patch now · Disclosed · since 15 May 2026 · CVE-2026-45665

    AI
  3. closed4.6
    Open WebUI CVE-2026-45317: CSRF Vulnerability in Open WebUI Image Uploads

    Patch now · Disclosed · since 15 May 2026 · CVE-2026-45317

    AI
  4. closed6.5
    Open WebUI CVE-2026-45339: API Key Restriction Bypass in Open WebUI

    Patch now · Disclosed · Patched · since 15 May 2026 · updated 15 May 2026 · CVE-2026-45339

    AI
  5. closed8.5
    Open WebUI CVE-2026-45400: Open WebUI SSRF Bypass in validate_url

    Patch now · Disclosed · since 14 May 2026 · updated 15 May 2026 · CVE-2026-45400

    AI
  6. closed6.5
    Open WebUI CVE-2026-45351: Open WebUI System Prompt Exposure to Non-Admin Users

    Patch now · Disclosed · since 14 May 2026 · updated 15 May 2026 · CVE-2026-45351

    AI