What is GHSA-67mj-442h-2gp6?

GHSA-67mj-442h-2gp6 is a security advisory published by GitHub Security Advisories with Medium severity. Rustls before 0.23.46 and 0.24.0-dev.1 before 0.24.0-dev.2 contains an information disclosure...

Which CVE IDs does GHSA-67mj-442h-2gp6 cover?

GHSA-67mj-442h-2gp6 covers the following CVE IDs: CVE-2026-123609. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-67mj-442h-2gp6?

GHSA-67mj-442h-2gp6 has a CVSS v3 base score of 4.0, published by GitHub Security Advisories.

GHSA-67mj-442h-2gp6MediumCVSS 4.0

Rustls before 0.23.46 and 0.24.0-dev.1 before 0.24.0-dev.2 contains an information disclosure...

Vendor

GitHub Security Advisories

Published

November 8, 2026

Last Modified

November 8, 2026

🔗 CVE IDs covered (1)

CVE-2026-123609 →

📋 Description

Rustls before 0.23.46 and 0.24.0-dev.1 before 0.24.0-dev.2 contains an information disclosure vulnerability where derived Debug formatting of client session values exposes secret key material. Custom ClientSessionStore implementations that log Tls12ClientSessionValue or Tls13ClientSessionValue can leak TLS 1.2 master secrets or TLS 1.3 resumption PSKs to log readers.

🔗 References (4)

https://github.com/rustls/rustls/security/advisories/GHSA-c8m5-c952-6cm4
https://nvd.nist.gov/vuln/detail/CVE-2026-123609
https://www.vulncheck.com/advisories/rustls-before-0.23.46-and-0.24.0-dev.1-before-0.24.0-dev.2-secret-exposure-via-debug
https://github.com/advisories/GHSA-67mj-442h-2gp6