CVEvulnerability
CVE-2025-68121
10.0 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2026-02-05
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-295
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.
Affected configurations
• golang go (< 1.24.13)
• golang go (>= 1.25.0 < 1.25.7)
• golang go 1.26.0
Related
Weakness · CWE (1)
- CWE-295 Improper Certificate Validation weakness
References
- https://go.dev/cl/737700 Patch
- https://go.dev/issue/77217 Exploit, Issue Tracking
- https://groups.google.com/g/golang-announce/c/K09ubi9FQFk Mailing List, Third Party Advisory
- https://pkg.go.dev/vuln/GO-2026-4337 Vendor Advisory