CVE-2026-39827
Invoking memory leak when rejecting channels can lead to DoS in golang.org/x/crypto/ssh
- State
- Published
- Severity
- 6.5 Medium
- Published
- May 22, 2026
- Updated
- May 22, 2026
- Reserved
- Apr 7, 2026
Description
An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
golang.org/x/crypto/sshgolang.org/x/crypto |
|
References
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