CVE-2026-39827
Invoking memory leak when rejecting channels can lead to DoS in golang.org/x/crypto/ssh
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 6.5EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
22 May 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
golang.org/x/crypto · golang.org/x/crypto/sshWant to know if your infrastructure is exposed to this?
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