PT-2026-139890

CVE-2026-123609

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Published

2026-11-08

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Updated

2026-11-08

Description by

CVSS 3.1
4.0
Medium
MetricsAV:L/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N
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.
Exploitability
Fix
Vendors
Affected products
Weakness enumeration
CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer
Related identifiers
CVE-2026-123609
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