CVE-2026-56855: CWE-770: Allocation of Resources Without Limits or Throttling in golang.org/x/crypto golang.org/x/crypto/ssh
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.
CVE-2026-56855: CWE-770: Allocation of Resources Without Limits or Throttling in golang.org/x/crypto golang.org/x/crypto/ssh
Description
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.
Affected software
pkg:golang/golang.org/x/crypto/sshRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Go
- Date Reserved
- 2026-06-23T15:10:49.353Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a987e89acd9273b49a9f1aa
Added to database: 09/02/2026, 19:52:41 UTC
Last updated: 09/02/2026, 20:37:23 UTC
Views: 4
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