Vulnerability in Ericc-Ch Copilot-Api
CVE-2026-6662
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (15.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Ericc-Ch Copilot-Api — versions 0.1, 0.2, 0.3
Weakness classification (CWE)
References
- vuldb.com/vuln/358300 (technical-description, vdb-entry)
- vuldb.com/vuln/358300/cti (signature, permissions-required)
- vuldb.com/submit/794601 (third-party-advisory)
- github.com/August829/CVEP/issues/31 (issue-tracking, exploit)
Frequently asked questions
- What is CVE-2026-6662?
- CVE-2026-6662 is a high-severity vulnerability in Ericc-Ch Copilot-Api, classified under Origin Validation Error. CVSS score: 7.3/10. Published 2026-04-20.
- How severe is CVE-2026-6662?
- High severity. CVSS v3 base score is 7.3 out of 10.