Detections
Analytics

Echo: nginx: security update to 1.26.3-3+deb13u10

critical Tenable Cloud Security Plugin ID 476917

Description

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

 - A vulnerability exists in NGINX Plus and NGINX Open Source when a location is configured that uses the
 alias directive together with rewrite and a set or return directive referencing the $request_filename
 variable. Alternatively, the same result could be achieved when the $request_filename variable is used in
 an access log format directive. An unauthenticated attacker along with conditions beyond their control can
 exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the
 NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with
 Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Impact: This
 vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system or to
 possibly trigger a code execution. There is no control plane exposure; this is a data plane issue only.
 Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
 (CVE-2026-15176)

Solution

Update the nginx library and its related packages to version 1.26.3-3+deb13u10 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-15176

Plugin Details

Severity: Critical

ID: 476917

Version: Revision 1.1

Type: Local

Published: 10/23/2026

Updated: 10/23/2026

Risk Information

VPR

Risk Factor: High

Score: 7.9

Percentile: 99.34

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

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

CVSS Score Source: CVE-2026-15176

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.2

Threat Score: 7.2

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/15/2026

Vulnerability Publication Date: 10/14/2026

Reference Information

CVE: CVE-2026-15176

IAVA: 2026-A-1142