CVE-2026-123609

CVE-2026-123609CVE-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.

Scoring

CVSS 4.0 ()
VectorCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N
Last modified2026-11-08
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.