Medium severity · published Jul 9, 2026
CVE-2026-59213
Open WebUI: Cross-user model-list exposure via static cache key in get_all_models (aiocache key= vs key_builder= misuse)
5.0
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
open-webui · open-webui
>= 0.6.27, < 0.10.0 · source: vendor
OW
Open Webui · Openwebui
0.6.27 before 0.10.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-59213
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59213
Patch
https://github.com/open-webui/open-webui/commit/0fc630b34b2899599dabffffa012afd47599aa75
Issue Tracking
https://github.com/open-webui/open-webui/pull/25783
Product
https://github.com/open-webui/open-webui/releases/tag/v0.10.0
Exploit
https://github.com/open-webui/open-webui/security/advisories/GHSA-3wp3-xxj9-5jqq
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