Detections
Analytics

Echo: libxml2: security update to 2.12.7+dfsg+really2.9.14-2.1+deb13u2+e7

low Tenable Cloud Security Plugin ID 462594

Description

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

 - libxml2 is vulnerable to multiple stack-based buffer overflows in the xmlcatalog utility when running in
 --shell mode. The usershell() function processes user input using fixed-size stack buffers without proper
 bounds checking. By supplying an overly long input line, an attacker can overflow internal buffers
 (command, arg, and argv) during input parsing. This results in memory corruption within the stack frame.
 Successful exploitation may cause a crash or potentially allow arbitrary code execution in the context of
 the xmlcatalog process. This issue has been fixed in the commit c2e233fc. NOTE: The maintainers of this
 project did not agree that this issue is a vulnerability and considered it a bug. (CVE-2026-11979)

Solution

Update the libxml2 library and its related packages to version 2.12.7+dfsg+really2.9.14-2.1+deb13u2+e7 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-11979

Plugin Details

Severity: Low

ID: 462594

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: High

Score: 7.6

Percentile: 98.44

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-11979

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

CVSS v4

Risk Factor: Low

Base Score: 1.8

Threat Score: 0.2

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/30/2026

Vulnerability Publication Date: 6/4/2026

Reference Information

CVE: CVE-2026-11979

IAVA: 2026-A-0532-S