SSRF Vulnerability in Apache HTTP Server with mod_proxy Loaded
CVE-2024-43204

7.5HIGH

Key Information:

Vendor

Apache
Status
Apache Http Server
Vendor
CVE Published:
10 July 2025

What is CVE-2024-43204?

A vulnerability exists in Apache HTTP Server when mod_proxy is loaded, permitting attackers to initiate outbound proxy requests to URLs they control. This issue arises under specific configurations where mod_headers is set to alter the Content-Type header based on user-defined HTTP request values. To mitigate this risk, it is essential for users to upgrade to version 2.4.64, which addresses this security concern.

Affected Version(s)

Apache HTTP Server 2.4.0 <= 2.4.63

References

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

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2024-43204 : SSRF Vulnerability in Apache HTTP Server with mod_proxy Loaded