🛡️ CVE-2025-68121
🔴 CVSS 10.0 — Critical ⚠️ Exploit Public CWE-295 NVD
10.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

During session resumption in crypto/tls, if the underlying Config has its ClientCAs or RootCAs fields mutated between the initial handshake and the resumed handshake, the resumed handshake may succeed when it should have failed. This may happen when a user calls Config.Clone and mutates the returned Config, or uses Config.GetConfigForClient. This can cause a client to resume a session with a server that it would not have resumed with during the initial handshake, or cause a server to resume a session with a client that it would not have resumed with during the initial handshake.

Details

Severity CRITICAL
CVSS Score 10.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE CWE-295
Public Exploit ⚠️ Yes
Source NVD
Published 2026-02-05
Updated 2026-06-13
Modified 2026-04-29

Affected Packages

Software From version Fixed in
go — —
golang — —
stdlib — —

References

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