CyberRota Analysis
This is a critical severity vulnerability with a CVSS score of 9.1. It may be remotely exploitable.
CVE
CVE-2026-39832
Severity
CRITICAL
CVSS
9.1
EPSS
0.60%
Original NVD Description
When adding a key to a remote agent constraint extensions such as restrict-destination-v00@openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all constraint extensions. Additionally, the in-memory keyring returned by NewKeyring() now rejects keys with unsupported constraint extensions instead of silently ignoring them.
Related CVEs
Other vulnerabilities affecting the same vendor(s)