Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Golang | Crypto | < 0.52.0 |
Related Weaknesses (CWE)
References
- https://go.dev/cl/781320Issue Tracking
- https://go.dev/issue/35127Issue Tracking
- https://groups.google.com/g/golang-announce/c/a082jnz-LvIMailing List
- https://pkg.go.dev/vuln/GO-2026-5016Vendor Advisory
FAQ
What is CVE-2026-39827?
CVE-2026-39827 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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. ...
How severe is CVE-2026-39827?
CVE-2026-39827 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-39827?
Check the references section above for vendor advisories and patch information. Affected products include: Golang Crypto.