SB2026010521 - Red Hat Enterprise Linux 8 update for the httpd:2.4 module 

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Main Vulnerability Database SB2026010521

SB2026010521 - Red Hat Enterprise Linux 8 update for the httpd:2.4 module

Published: January 5, 2026

Security Bulletin ID SB2026010521
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Integer overflow (CVE-ID: CVE-2025-55753)

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to an integer overflow in mod_md (ACME) in the case of failed ACME certificate renewal. The web server will set the backoff timer becoming 0 after a number of failures (~30 days in default configurations), leading to a denial of service condition.


2) Improper Neutralization of Server-Side Includes (SSI) Within a Web Page (CVE-ID: CVE-2025-58098)

The vulnerability allows a remote attacker to execute arbitrary commands.

The vulnerability exists due to insufficient input validation with Server Side Includes (SSI) enabled and mod_cgid (but not mod_cgi). The web server passes the shell-escaped query string to #exec cmd="..." directives. A remote attacker can send a specially crafted HTTP request to the server and potentially execute arbitrary code.


Remediation

Install update from vendor's website.

References