Detections
Analytics

SCA: security update for golang.org/x/crypto/ssh (GHSA-w879-237q-wc7r)

high Tenable Cloud Security Plugin ID 443960

Description

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

 - The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key
 with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during
 signature verification. This could be triggered by unauthenticated clients during public key
 authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.
 (CVE-2026-39829)

Solution

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

See Also

https://github.com/advisories/GHSA-w879-237q-wc7r

Plugin Details

Severity: High

ID: 443960

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: 4.4

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-39829

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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-2026-39829