CVE-2024-43204
HIGH7.5EPSS 0.68%Apache HTTP Server: SSRF with mod_headers setting Content-Type header
Published: 7/10/2025Modified: 4/28/2026
Description
SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker. Requires an unlikely configuration where mod_headers is configured to modify the Content-Type request or response header with a value provided in the HTTP request. Users are recommended to upgrade to version 2.4.64 which fixes this issue.
Affected packages (3)
- Alpine/apache2from 0, < 2.4.64-r0
- Bitnami/apache>= 2.4.0, < 2.4.64
- Debian/apache2from 0, < 2.4.65-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
References (7)
- ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2024-43204
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2024-43204
- WEBhttps://httpd.apache.org/security/vulnerabilities_24.html
- WEBhttps://lists.debian.org/debian-lts-announce/2025/08/msg00009.html
- WEBhttps://nvd.nist.gov/vuln/detail/CVE-2024-43204
- WEBhttp://www.openwall.com/lists/oss-security/2025/07/10/2
- WEBhttp://www.openwall.com/lists/oss-security/2025/07/10/4