PT-2026-34586 · Ericc Ch · Copilot-Api

Yu_Bao · Published 2026-04-22 · Updated 2026-04-23 · CVE-2026-6874

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions ericc-ch copilot-api versions prior to 0.7.1

Description An issue exists in the Header Handler component within the '/token' file. A remote attacker can manipulate the Host argument, leading to a reliance on reverse DNS resolution, which is the process of querying the Domain Name System to obtain the domain name associated with a given IP address.

Recommendations Update ericc-ch copilot-api to a version later than 0.7.0. As a temporary workaround, restrict access to the '/token' endpoint to minimize the risk of exploitation.

Exploit

Fix

Weakness Enumeration

CWE-350

Related Identifiers

CVE-2026-6874

GHSA-3VR4-CVMG-7FX4

Affected Products

Copilot-Api

References · 8

• 🔥 https://github.com/August829/CVEP/issues/32 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-6874 · Security Note
• https://osv.dev/vulnerability/GHSA-3vr4-cvmg-7fx4 · Vendor Advisory
• https://github.com/ericc-ch/copilot-api · Note
• https://vuldb.com/submit/795212 · Note
• https://vuldb.com/vuln/359039/cti · Note
• https://twitter.com/CVEnew/status/2047359922602479755 · Twitter Post
• https://vuldb.com/vuln/359039 · Note