CVE-2026-6662
ericc-ch copilot-api Token Endpoint server.ts cors cross-domain policy
- State
- Published
- Severity
- 6.9 Medium
- Published
- Apr 20, 2026
- Updated
- Apr 20, 2026
- Reserved
- Apr 20, 2026
Description
A vulnerability was found in ericc-ch copilot-api up to 0.7.0. The impacted element is the function cors of the file src/server.ts of the component Token Endpoint. Performing a manipulation results in permissive cross-domain policy with untrusted domains. It is possible to initiate the attack remotely. The exploit has been made public and could be used.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 7.3 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R | VulDB |
| 3.0 | 7.3 High | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 7.5 High | AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
copilot-apiericc-ch |
|
References
- VDB-358300 | ericc-ch copilot-api Token Endpoint server.ts cors cross-domain policyvdb-entrytechnical-description
- VDB-358300 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #794601 | ericc-ch copilot-api 0.7.0 Cross-Origin Token Theft via Wildcard CORS & Open Token Endpointthird-party-advisory
- https://github.com/August829/CVEP/issues/31exploitissue-tracking
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