CVE-2026-56449
Received Received - Intake

Out-of-Bounds Write in Apache HTTP Server mod_proxy_html

Publication date: 2026-10-01

Last updated on: 2026-10-01

Assigner: Apache Software Foundation

Description
Out-of-bounds Write vulnerability in Apache HTTP Server's mod_proxy_html with crafted HTTP response bodies. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-01
Last Modified
2026-10-01
Generated
2026-10-01
AI Q&A
2026-10-01
EPSS Evaluated
N/A
NVD
CVE-2026-56449
EUVD
EUVD-2026-90895

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
apache http_server From 2.4.0 (inc) to 2.4.68 (inc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is an out-of-bounds write vulnerability in Apache HTTP Server's mod_proxy_html module. It occurs when the server processes crafted HTTP response bodies, potentially allowing attackers to write data outside the intended memory buffer.

Impact Analysis

An attacker could exploit this to execute arbitrary code, crash the server, or gain unauthorized access to sensitive data. Systems using vulnerable Apache versions (2.4.0-2.4.68) with mod_proxy_html enabled are at risk.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR (data protection) and HIPAA (health data security) requirements. Organizations may face legal penalties, reputational damage, and loss of compliance certifications.

Mitigation Strategies

Upgrade Apache HTTP Server to a version beyond 2.4.68 to address the out-of-bounds write vulnerability in mod_proxy_html.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-56449. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart