CVE-2026-59213 json
Open WebUI: Cross-user model-list exposure via static cache key in get_all_models (aiocache key= vs key_builder= misuse)
published 2026-07-09 4 mo ago modified 2026-08-04 3 mo ago also GHSA-3wp3-xxj9-5jqq , PYSEC-2026-3589 , EUVD-2026-42629
- cvss
- 3.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 31%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi open-webui 0.10.0
- openwebui open_webui 0.10.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/open-webui/open-webui/security/advisories/GHSA-3wp3-xxj9-5jqq referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N |
| NVD | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
| OSV | 3.1 | 3.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N |
| GitHub | 3.1 | 3.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | open-webui | >=0.6.27, <0.10.0 |
0.10.0 |
Affected products
- open-webui open-webui
Classification
- Weakness
-
- CWE-524 Use of Cache Containing Sensitive Information
References
-
github.com
/open-webui/open-webui/pull/25783
web, issue-tracking, patch
-
github.com
/open-webui/open-webui/commit/0fc630b34b2899599dabffffa012afd47599aa75
web, patch
-
github.com
/open-webui/open-webui/security/advisories/GHSA-3wp3-xxj9-5jqq
exploit, web, mitigation, vendor-advisory
-
github.com
/open-webui/open-webui/releases/tag/v0.10.0
web, product, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-59213
advisory
-
github.com
/open-webui/open-webui
package
-
pypi.org
/project/open-webui
package
-
github.com
/advisories/GHSA-3wp3-xxj9-5jqq
advisory
Sources
- CVE List CVE-2026-59213
- GitHub Advisory GHSA-3wp3-xxj9-5jqq
- NVD CVE-2026-59213
- OSV PYSEC-2026-3589
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.