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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2026-39830

Invoking client can cause server deadlock on unexpected responses in golang.org/x/crypto/ssh

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Status
Published
Published
Updated
Assigning organization
Go

Description

A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

golang.org/x/crypto golang.org/x/crypto/ssh

Default version status: unaffected

  • 0 to < 0.52.0affected

References