Inefficient Regular Expression Complexity Affecting pcs-snmp package, versions *


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.05% (17th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Inefficient Regular Expression Complexity vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-CENTOS9-PCSSNMP-15884789
  • published4 Apr 2026
  • disclosed26 Mar 2026

Introduced: 26 Mar 2026

NewCVE-2026-4923  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

There is no fixed version for Centos:9 pcs-snmp.

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 Centos. See How to fix? for Centos:9 relevant fixed versions and status.

Impact:

When using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path.

Unsafe examples:

/*foo-*bar-:baz /*a-:b-*c-:d /x/*a-:b/*c/y

Safe examples:

/*foo-:bar /*foo-:bar-*baz

Patches:

Upgrade to version 8.4.0.

Workarounds:

If you are using multiple wildcard parameters, you can check the regex output with a tool such as https://makenowjust-labs.github.io/recheck/playground/ to confirm whether a path is vulnerable.

CVSS Base Scores

version 3.1