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CVE-2026-6874— ericc-ch copilot-api Header token dns rebinding

Quick assessment

Affected
ericc-ch copilot-api
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Copilot API Proxy是Erick Christian个人开发者的一个GitHub Copilot API的逆向代理服务。 Copilot API Proxy 0.7.0及之前版本存在安全漏洞，该漏洞源于Header Handler组件对Host参数的处理依赖反向DNS解析，可能导致远程攻击。

CVSS 4.3 · Medium EPSS 0.34% · P25
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I. Basic Information for CVE-2026-6874

Vulnerability Information
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Vulnerability Title
ericc-ch copilot-api Header token dns rebinding
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in ericc-ch copilot-api up to 0.7.0. This impacts an unknown function of the file /token of the component Header Handler. Executing a manipulation of the argument Host can lead to reliance on reverse dns resolution. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不恰当地信任反向DNS
Source: CVE Program / CVE List V5
Vulnerability Title
Copilot API Proxy 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Copilot API Proxy是Erick Christian个人开发者的一个GitHub Copilot API的逆向代理服务。 Copilot API Proxy 0.7.0及之前版本存在安全漏洞，该漏洞源于Header Handler组件对Host参数的处理依赖反向DNS解析，可能导致远程攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ericc-ch copilot-api 0.1 -

II. Public POCs for CVE-2026-6874

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III. Intelligence Information for CVE-2026-6874

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News Coverage for CVE-2026-6874 (1)

IV. Related Vulnerabilities

Same product: copilot-api
Same vendor: ericc-ch
Same weakness: CWE-350

V. Comments for CVE-2026-6874

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