What’s Vulnerable › Vulnerabilities

CVE-2026-59213: Open WebUI: Cross-user model-list exposure via static cache key in get_all_models (aiocache key= vs key_builder= misuse)

• Severity: medium (CVSS 5.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-07-09 · updated 2026-07-10
• Weakness: CWE-524

Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.27 before 0.10.0, get_all_models handlers in routers/openai.py and routers/ollama.py passed a lambda to aiocache key instead of key_builder, causing permission-filtered per-user model lists to share a static cache entry and exposing one user’s model list to another caller during the TTL window. This issue is fixed in version 0.10.0.

Affected products

• open-webui: from 0.6.27 before 0.10.0 — fixed in 0.10.0

How to fix

Upgrade to a fixed version: open-webui 0.10.0. Check the vendor advisory for mitigations.

References

• https://github.com/open-webui/open-webui/commit/0fc630b34b2899599dabffffa012afd47599aa75
• https://github.com/open-webui/open-webui/pull/25783
• https://github.com/open-webui/open-webui/releases/tag/v0.10.0
• https://github.com/open-webui/open-webui/security/advisories/GHSA-3wp3-xxj9-5jqq
• https://github.com/open-webui/open-webui/security/advisories/GHSA-3wp3-xxj9-5jqq

Get alerted when CVE-2026-59213 or the next vulnerability affects your stack