Detections
Analytics

Echo: expat: security update to 2.8.1-1

high Tenable Self-Hosted Container Security Plugin ID 455146

Description

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

 - In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial
 of service via moderately sized crafted XML input. (CVE-2026-45186)

Solution

Update the expat library and its related packages to version 2.8.1-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-45186

Plugin Details

Severity: High

ID: 455146

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: 3

Percentile: 23.63

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-45186

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/10/2026

Vulnerability Publication Date: 5/10/2026

Reference Information

CVE: CVE-2026-45186

IAVA: 2026-A-0451