CVE-2025-68121
Published: January 16, 2026Last modified: January 17, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 10 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | CHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | go | Fixed (1.24.12-r0) |
| 25 LTS | go | Fixed (1.24.12-r0) | |
| Stream | go | Fixed (1.25.6-r0) | |
| Hardened Containers | 23 LTS | go | Fixed (1.24.12-r0) |
| 25 LTS | go | Fixed (1.24.12-r0) | |
| Stream | go | Fixed (1.25.6-r0) |