CVE-2026-39827

medium

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.

References

https://pkg.go.dev/vuln/GO-2026-5016

https://groups.google.com/g/golang-announce/c/a082jnz-LvI

https://go.dev/issue/35127

https://go.dev/cl/781320

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-31392

Details

Source: Mitre, NVD

Published: 2026-05-22

Updated: 2026-07-23

Named Vulnerability: GO-2026-5016Named Vulnerability: GHSA-qpw4-5x99-6vjp

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00281