Detections
Analytics

SCA: security update for golang.org/x/crypto/ssh/agent (GHSA-f5wc-c3c7-36mc)

high Tenable Cloud Security Plugin ID 443974

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - When adding a key to a remote agent constraint extensions such as [email protected]
 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. (CVE-2026-39832)

Solution

Update the golang.org/x/crypto/ssh/agent library and its related packages to version 0.52.0 or later.

See Also

https://github.com/advisories/GHSA-f5wc-c3c7-36mc

Plugin Details

Severity: High

ID: 443974

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 6/26/2026

Updated: 6/30/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-39832

CVSS v3

Risk Factor: High

Base Score: 8.7

Temporal Score: 7.6

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/25/2026

Vulnerability Publication Date: 5/12/2026

Reference Information

CVE: CVE-2026-39832

cwe: CWE-502