Arbitrary Code Injection Affecting pcs-snmp package, versions <0:0.11.9-2.el9_6.4


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
2.62% (85th percentile)

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  • Snyk IDSNYK-RHEL9-PCSSNMP-16334373
  • published1 May 2026
  • disclosed31 Mar 2026

Introduced: 31 Mar 2026

CVE-2026-4800  (opens in a new tab)
CWE-94  (opens in a new tab)

How to fix?

Upgrade RHEL:9 pcs-snmp to version 0:0.11.9-2.el9_6.4 or higher.
This issue was patched in RHSA-2026:11471.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pcs-snmp package and not the pcs-snmp package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

The fix for CVE-2021-23337 added validation for the variable option in _.template but did not apply the same validation to options.imports key names, and both paths flow into the same Function() constructor sink. When an application passes untrusted input as options.imports key names, an attacker can inject default-parameter expressions that execute arbitrary code at template compilation time. Additionally, _.template uses assignInWith to merge imports, which enumerates inherited properties via for..in, so if Object.prototype has been polluted by another vector the polluted keys are copied into the imports object and passed to Function(). The issue is fixed in 4.18.1 for lodash, lodash-es, lodash-amd, and lodash.template. As a workaround, do not pass untrusted input as key names in options.imports; use only developer-controlled, static key names.

CVSS Base Scores

version 3.1