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6.5 Medium

CVE-2026-39827 An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory…

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.

Affected products and versions

Product Affected versions Fixed in
golang.org/x/crypto/ssh 0.52 earliest → < 0.52.0 0.52.0

References

Timeline

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The 15 CVEs of golang.org/x/crypto/ssh →
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