CVE-2026-70484CWE-862CWE-863broken-access-control

CVE-2026-70484

Medium · published August 5, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
34.5
In the wild
Unconfirmed
What it is

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 An authenticated user whose image-generation permission had been revoked could still consume the operator's configured image provider through chat completions, spending API credits and provider quota and writing generated files to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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00413 · 34.5th percentile
Weaknesses
CWE-862 · Missing Authorization; CWE-863 · Incorrect Authorization
Published
2026-08-05T00:16Z
Affected products (1)
ProductVersionsFixed in
openwebui/open_webui≥ 0.7.0, < 0.11.00.11.0
References (4)
EPSS history
Timeline
  • 04 AUG 19:56Z
    Open WebUI: Users denied the image-generation permission can still generate images via chat completions
    cvelistv5