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4 vulnerabilities by janhq
CVE-2026-66005 (GCVE-0-2026-66005)
Vulnerability from nvd – Published: 2026-07-24 14:57 – Updated: 2026-09-17 17:54 X_Open Source
VLAI
EPSS
VEX
Title
Jan Local API Server CORS Origin Reflection via 0.0.0.0 Binding
Summary
Jan through 0.8.4, fixed in commit 3e1c1e7, contains a CORS misconfiguration vulnerability in its local API server that allows network-adjacent attackers to bypass trusted host restrictions by exploiting the server's replacement of user-configured trusted hosts with a wildcard that reflects arbitrary origins with credentials. Attackers on the local network or using DNS rebinding can reach the unauthenticated OpenAI-compatible API to perform inference, enumerate models, invoke MCP tools, and read cross-origin responses.
Severity
6.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-24 15:32 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/janhq/jan/issues/8453 | technical-descriptionexploitissue-tracking |
| https://github.com/janhq/jan/pull/8506 | issue-trackingpatch |
| https://github.com/janhq/jan/commit/3e1c1e724f696… | patch |
| https://www.vulncheck.com/advisories/jan-local-ap… | third-party-advisory |
Impacted products
Date Public
2026-07-19 00:00
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CVE-2024-36857 (GCVE-0-2024-36857)
Vulnerability from nvd – Published: 2024-06-04 18:26 – Updated: 2025-02-13 15:59Summary
Jan v0.4.12 was discovered to contain an arbitrary file read vulnerability via the /v1/app/readFileSync interface.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-14 19:34 UTC
CWE
- n/a
- CWE-31 - Path Traversal: 'dir\..\..\filename'
Assigner
References
1 reference
Impacted products
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CVE-2026-66005 (GCVE-0-2026-66005)
Vulnerability from cvelistv5 – Published: 2026-07-24 14:57 – Updated: 2026-09-17 17:54 X_Open Source
VLAI
EPSS
VEX
Title
Jan Local API Server CORS Origin Reflection via 0.0.0.0 Binding
Summary
Jan through 0.8.4, fixed in commit 3e1c1e7, contains a CORS misconfiguration vulnerability in its local API server that allows network-adjacent attackers to bypass trusted host restrictions by exploiting the server's replacement of user-configured trusted hosts with a wildcard that reflects arbitrary origins with credentials. Attackers on the local network or using DNS rebinding can reach the unauthenticated OpenAI-compatible API to perform inference, enumerate models, invoke MCP tools, and read cross-origin responses.
Severity
6.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-24 15:32 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/janhq/jan/issues/8453 | technical-descriptionexploitissue-tracking |
| https://github.com/janhq/jan/pull/8506 | issue-trackingpatch |
| https://github.com/janhq/jan/commit/3e1c1e724f696… | patch |
| https://www.vulncheck.com/advisories/jan-local-ap… | third-party-advisory |
Impacted products
Date Public
2026-07-19 00:00
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CVE-2024-36857 (GCVE-0-2024-36857)
Vulnerability from cvelistv5 – Published: 2024-06-04 18:26 – Updated: 2025-02-13 15:59Summary
Jan v0.4.12 was discovered to contain an arbitrary file read vulnerability via the /v1/app/readFileSync interface.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-14 19:34 UTC
CWE
- n/a
- CWE-31 - Path Traversal: 'dir\..\..\filename'
Assigner
References
1 reference
Impacted products
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