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Vulnerabilities CVE-2026-39832

CVE-2026-39832

None
Open
TLP:CLEAR

Invoking agent constraints dropped when forwarding keys in golang.org/x/crypto/ssh/agent

NVD CVE.org
Critical Infrastructure

AI Analysis

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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.

Details

EPSS Score
0.60%

45.6th percentile

Confidence
90%
Published
May 22, 2026
Last Modified
Aug 11, 2026
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