Out-of-Bounds Write Vulnerability in Apache HTTP Server by Apache Software Foundation
CVE-2026-56153

7.5HIGH

Key Information:

Vendor

Apache
Status
Apache Http Server
Vendor
CVE Published:
1 October 2026

What is CVE-2026-56153?

An out-of-bounds write vulnerability has been identified in the mod_charset_lite module of the Apache HTTP Server. This flaw allows an attacker to execute malicious code by manipulating memory outside the intended bounds, potentially leading to arbitrary code execution or application crashes. This issue impacts all versions of Apache HTTP Server from 2.4.0 through 2.4.68, necessitating prompt updates to ensure the security of web applications using this server.

Affected Version(s)

Apache HTTP Server 2.4.0 <= 2.4.68

References

https://httpd.apache.org/security/vulnerabilities_24.html
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Bartlomiej Dmitruk at striga.ai
Masumi Tanaka
.