Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-70484

CVE-2026-70484MEDIUM

open-webui open-webui — Open WebUI: Users denied the image-generation permission can still generate images via chat completions

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  U  N  L  L    5.4   .0041   33.3     —

AFFECTED
  Product     Versions              Fixed
  open-webui  >= 0.7.0, < 0.11.0 –  —

TIMELINE
  Aug 4   Reserved by GitHub_M
  Aug 4   Published (CNA: GitHub_M)
  Sep 18  RESCORED — CVE-2026-70484 (open-webui). CVSS 4.3 → 5.4 (NVD).

CWE-862, CWE-863 · CNA: GitHub_M · CVSS v3.1 · 4 references · NVD status: Analyzed

Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.7.0 until 0.11.0, the legacy chat-completions features block trusted a client-supplied image_generation flag and did not re-check the features.image_generation permission that the direct image routes and native function-calling path enforce. An authenticated user whose image-generation permission had been revoked could still consume the operator's configured image provider through chat completions, spending API credits and provider quota and writing generated files to operator storage, without exposing provider credentials or other users' data. This issue is fixed in 0.11.0.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 4, 2026	Reserved	Reserved by GitHub_M
August 4, 2026	Published	Published (CNA: GitHub_M)
September 18, 2026	RESCORED	RESCORED — CVE-2026-70484 (open-webui). CVSS 4.3 → 5.4 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
open-webui	open-webui	—	>= 0.7.0, < 0.11.0	—

Weaknesses

CWE-862 · CWE-863

References (4)

https://github.com/open-webui/open-webui/commit/897d69a35c65f8ab54583bb9ca8dc74eab7bcd29 [Patch]
https://github.com/open-webui/open-webui/pull/26703 [Patch, Vendor Advisory]
https://github.com/open-webui/open-webui/releases/tag/v0.11.0 [Release Notes]
https://github.com/open-webui/open-webui/security/advisories/GHSA-g423-grf7-98rv [Patch, Vendor Advisory]

Authoritative record: CVE-2026-70484 at cve.org

Vendors: open-webui

Weaknesses: CWE-862 · CWE-863

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-70484 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.