What is GHSA-76h9-4mx5-8c9v?

GHSA-76h9-4mx5-8c9v is a security advisory published by GitHub Security Advisories with High severity. In JetBrains Ktor before 3.6.1 session forgery was possible via tampered encrypted session cookies

Which CVE IDs does GHSA-76h9-4mx5-8c9v cover?

GHSA-76h9-4mx5-8c9v covers the following CVE IDs: CVE-2026-123317. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-76h9-4mx5-8c9v?

GHSA-76h9-4mx5-8c9v has a CVSS v3 base score of 8.1, published by GitHub Security Advisories.

GHSA-76h9-4mx5-8c9vHighCVSS 8.1

In JetBrains Ktor before 3.6.1 session forgery was possible via tampered encrypted session cookies

Vendor

GitHub Security Advisories

Published

November 6, 2026

Last Modified

November 6, 2026

🔗 CVE IDs covered (1)

CVE-2026-123317 →

📋 Description

In JetBrains Ktor before 3.6.1 session forgery was possible via tampered encrypted session cookies

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-123317
https://www.jetbrains.com/privacy-security/issues-fixed
https://github.com/advisories/GHSA-76h9-4mx5-8c9v