Detections
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Echo: expat: security update to 2.8.2-1

medium Tenable Self-Hosted Container Security Plugin ID 457491

Description

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

 - In libexpat before 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold
 backing array reallocation is mishandled when there is data-structure sharing across parsers.
 (CVE-2026-56132)

Solution

Update the expat library and its related packages to version 2.8.2-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-56132

Plugin Details

Severity: Medium

ID: 457491

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.5

Percentile: 57.56

CVSS v2

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 4.4

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

CVSS Score Source: CVE-2026-56132

CVSS v3

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 6

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/19/2026

Vulnerability Publication Date: 6/19/2026

Reference Information

CVE: CVE-2026-56132

IAVA: 2026-A-0650-S