Apache HTTP Server 2.4.64+ fixes HTTP response splitting in core
CVE-2024-42516 Published on July 10, 2025

Apache HTTP Server: HTTP response splitting
HTTP response splitting in the core of Apache HTTP Server allows an attacker who can manipulate the Content-Type response headers of applications hosted or proxied by the server can split the HTTP response. This vulnerability was described as CVE-2023-38709 but the patch included in Apache HTTP Server 2.4.59 did not address the issue. Users are recommended to upgrade to version 2.4.64, which fixes this issue.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2024-42516 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, a high impact on integrity, and no impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
HIGH
Availability Impact:
NONE

Timeline

reported

Weakness Type

Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.


Products Associated with CVE-2024-42516

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2024-42516 are published in these products:

Apache HTTP Server
 
Canonical Ubuntu Linux
 
F5 Networks Http Server
 
Oracle
 
Microsoft Http Server
 

Affected Versions

Apache Software Foundation Apache HTTP Server:

Exploit Probability

EPSS
0.32%
Percentile
54.68%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.