CVEvulnerability
CVE-2026-56855
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-09-02
- Last modified
- 2026-09-04
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-770
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 configurations
• golang crypto (< 0.56.0)
Related
Weakness · CWE (1)
- CWE-770 Allocation of Resources Without Limits or Throttling weakness
References
- https://go.dev/cl/826524 Patch
- https://go.dev/issue/81317 Issue Tracking, Vendor Advisory
- https://groups.google.com/g/golang-announce/c/1y3fb2np35U Mailing List, Vendor Advisory
- https://pkg.go.dev/vuln/GO-2026-6355 Vendor Advisory