Detections
Analytics

Echo: expat: security update to 2.9.0-1

high Tenable Self-Hosted Container Security Plugin ID 461186

Description

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

 - libexpat versions 2.7.2 through 2.8.5 contain an integer overflow vulnerability in expat_realloc()
 function on 32-bit platforms when computing allocation sizes. Attackers supplying malicious XML to
 applications parsing with vulnerable libexpat can cause heap buffer overflow, memory corruption, or denial
 of service. (CVE-2026-102633)

Solution

Update the expat library and its related packages to version 2.9.0-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-102633

Plugin Details

Severity: High

ID: 461186

Version: Revision 1.2

Type: Local

Published: 10/2/2026

Updated: 10/13/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.76

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4

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

CVSS Score Source: CVE-2026-102633

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

CVSS v4

Risk Factor: High

Base Score: 8.2

Threat Score: 4.6

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/30/2026

Vulnerability Publication Date: 9/29/2026

Reference Information

CVE: CVE-2026-102633

IAVA: 2026-A-1100