Resource Exhaustion Affecting httpd package, versions *


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
7.11% (94th 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 IDSNYK-RHEL10-HTTPD-16721213
  • published17 May 2026
  • disclosed1 Jan 2018

Introduced: 1 Jan 2018

CVE-2018-20843  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 httpd.

NVD Description

Note: Versions mentioned in the description apply only to the upstream httpd package and not the httpd package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).

References

CVSS Base Scores

version 3.1