Detections
Analytics

Echo: gnutls28: security update to 3.8.9-3+e7

high Tenable Self-Hosted Container Security Plugin ID 462558

Description

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

 - A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons
 of `nameConstraints` labels, specifically for `dNSName` (DNS) or `rfc822Name` (email) constraints within
 `excludedSubtrees` or `permittedSubtrees`. A remote attacker can exploit this by crafting a leaf
 certificate with casing differences in the Subject Alternative Name (SAN), leading to a policy bypass
 where a certificate that should be rejected is instead accepted. This could result in unauthorized access
 or information disclosure. (CVE-2026-3833)

Solution

Update the gnutls28 library and its related packages to version 3.8.9-3+e7 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-3833

Plugin Details

Severity: High

ID: 462558

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

Percentile: 96.27

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.6

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

CVSS Score Source: CVE-2026-3833

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.7

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/1/2026

Vulnerability Publication Date: 4/30/2026

Reference Information

CVE: CVE-2026-3833

IAVA: 2026-A-0405