chore(deps): update module golang.org/x/crypto to v0.56.0 [security]

[NumaryBot]

This PR contains the following updates:

Package	Type	Update	Change
golang.org/x/crypto	indirect	minor	v0.55.0 -> v0.56.0

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Prevent DoS on deadlocked undecided channel in golang.org/x/crypto/ssh

CVE-2026-78662 / GO-2026-6354

More information

Details

Previously, a channel registered in the mux's chanList is not usable until it is established. A malicious peer was able flood the channel's incomingRequests, deadlocking the entire connection.

Now, we add an atomic established state, set when a channel becomes usable. Until such a time, handlePacket drops every packet other than the open confirmation/failure, without blocking and without tearing down the connection.

Severity

Unknown

References

• https://go.dev/issue/81316
• https://go.dev/cl/826504
• https://groups.google.com/g/golang-announce/c/1y3fb2np35U

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).

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Prevent DoS on deadlocked established channel in golang.org/x/crypto/ssh

CVE-2026-56855 / GO-2026-6355

More information

Details

Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection.

Now, we handle all RFC 4254 channel messages; global requests are handled explicitly. Then, treat all other messages as a protocol error and tear the connection down instead of buffering and blocking.

Severity

Unknown

References

• https://go.dev/issue/81317
• https://go.dev/cl/826524
• https://groups.google.com/g/golang-announce/c/1y3fb2np35U

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).

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This PR has been generated by Renovate Bot.

[NumaryBot]

ℹ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• The go directive was updated for compatibility reasons

Details:

Package	Change
go	1.25.0 -> 1.26.0

[NumaryBot]

✅ Approve — automated review

The dependency and required Go directive updates are consistent, including with the repository's Go 1.26 development environment.

No findings.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (d680a5a) to head (ac65f02).

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #115   +/-   ##
=====================================
  Coverage   0.00%   0.00%           
=====================================
  Files         11      11           
  Lines        682     682           
=====================================
  Misses       682     682           

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