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Security Advisories

CVE-2026-39830

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-39830

Severity

9.1

Critical

CVSS V3

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Summary

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

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.

References

Affected packages


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