Detections
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Echo: nginx: security update to 1.26.3-3+deb13u7+e1nginx-1.30: security update to 1.30.1nginx-1.31: security update to 1.31.0

medium Tenable Cloud Security Plugin ID 455349

Description

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

 - NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When charset,
 source_charset, and charset_map and proxy_pass with disabled buffering ("off") directives are configured,
 unauthenticated attackers can send requests that with conditions beyond the attackers' control to cause a
 heap buffer over-read in the NGINX worker process, leading to limited disclosure of memory or a restart.
 Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
 (CVE-2026-42934)

Solution

Update the nginx library and its related packages to version 1.26.3-3+deb13u7+e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-42934

Plugin Details

Severity: Medium

ID: 455349

Version: Revision 1.2

Type: Local

Published: 10/1/2026

Updated: 10/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.85

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2026-42934

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.2

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/14/2026

Vulnerability Publication Date: 5/13/2026

Reference Information

CVE: CVE-2026-42934