high 7.5

CVE-2024-43204 json

Apache HTTP Server: SSRF with mod_headers setting Content-Type header

published 2025-07-10 15 mo ago modified 2026-09-08 2 mo ago also BIT-apache-2024-43204 , EUVD-2024-54774

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits: 0; none known

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.

Patch / fix

fixed in 2 distros 7

bitnami apache 2.4.64
apache http_server 2.4.64

debian ubuntu red hat suse opensuse alpine azure linux

apache2 Debian 12 2.4.65-1~deb12u1
apache2 Debian 14, Debian 13 2.4.64-1

debian advisories DEBIAN-CVE-2024-43204

apache2 Ubuntu 22.04 LTS 2.4.52-1ubuntu4.15
apache2 Ubuntu 24.04 LTS 2.4.58-1ubuntu8.7
apache2 Ubuntu 25.10 2.4.64-1ubuntu2
apache2 Ubuntu Pro 14.04 LTS 2.4.7-1ubuntu4.22+esm12
apache2 Ubuntu Pro 16.04 LTS 2.4.18-2ubuntu3.17+esm16
apache2 Ubuntu Pro 18.04 LTS 2.4.29-1ubuntu4.27+esm6
apache2 Ubuntu Pro 20.04 LTS 2.4.41-4ubuntu3.23+esm2

ubuntu advisories UBUNTU-CVE-2024-43204

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

jbcs-httpd24-httpd jboss core services 1 2.4.62-16.el8jbcs
jbcs-httpd24-mod_ssl jboss core services 1 1:2.4.62-16.el8jbcs
jbcs-httpd24-mod_ldap jboss core services 1 2.4.62-16.el8jbcs
jbcs-httpd24-mod_http2 jboss core services 1 2.0.29-13.el8jbcs
jbcs-httpd24-httpd-tools jboss core services 1 2.4.62-16.el8jbcs
jbcs-httpd24-mod_session jboss core services 1 2.4.62-16.el8jbcs
jbcs-httpd24-httpd-manual jboss core services 1 2.4.62-16.el8jbcs
jbcs-httpd24-httpd-selinux jboss core services 1 2.4.62-16.el8jbcs

red hat advisories RHSA-2026:56868

apache2 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 2.4.66-150400.6.57.1
apache2 SLE Module for Basesystem 15 SP7 2.4.62-150700.4.3.1
apache2-event SLE Module for Package Hub 15 SP7 2.4.62-150700.4.3.1
apache2-utils SLE Module for Server Applications 15 SP7 2.4.62-150700.4.3.1
apache2-worker SLE Module for Server Applications 15 SP7 2.4.62-150700.4.3.1
apache2-prefork SLE Module for Basesystem 15 SP7 2.4.62-150700.4.3.1
apache2 SLE Module for Package Hub 15 SP6, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 2.4.58-150600.5.35.1
apache2-event SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 2.4.58-150600.5.35.1

suse advisories SUSE-SU-2026:2686-1 SUSE-SU-2025:02685-1 SUSE-SU-2025:02684-1 SUSE-SU-2025:02683-1 SUSE-SU-2025:02682-1 SUSE-SU-2025:02565-1

apache2 openSUSE Tumbleweed 2.4.64-1.1

opensuse advisories openSUSE-SU-2025:15360-1

apache2 Alpine 3.24, Alpine 3.23, Alpine 3.22 +3 more 2.4.64-r0

alpine advisories ALPINE-CVE-2024-43204

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

httpd CBL-Mariner 2.0, Azure Linux 3.0 2.4.64-1

azure linux advisories AZL-65169 AZL-65217

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-43204 updated 2026-11-05 cvss 5.4

httpd: SSRF in Apache HTTP Server with mod_proxy loaded

Red Hat Enterprise Linux 6 httpd, mod_ssl, httpd-tools, httpd-manual Red Hat Enterprise Linux 7 httpd, mod_ssl, mod_ldap, httpd-tools, mod_session, httpd-manual, +1 more
affected: workaround, no fix planned “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.”
Red Hat Enterprise Linux 8 httpd, mod_md, mod_ssl, mod_ldap, mod_http2, httpd-tools, +4 more Red Hat Enterprise Linux 9 httpd, mod_lua, mod_ssl, mod_ldap, httpd-core, httpd-tools, +4 more Red Hat Enterprise Linux 10 httpd
affected: workaround, no fix available “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.”
Red Hat JBoss Core Services 2.4.62.SP5
fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2026:56869
Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-httpd 2.4.62-16.el8jbcs, jbcs-httpd24-mod_ssl 2.4.62-16.el8jbcs, jbcs-httpd24-mod_ldap 2.4.62-16.el8jbcs, jbcs-httpd24-httpd-tools 2.4.62-16.el8jbcs, jbcs-httpd24-mod_session 2.4.62-16.el8jbcs, jbcs-httpd24-httpd-manual 2.4.62-16.el8jbcs, +2 more
fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2026:56868
Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-mod_md 2.4.28-19.el8jbcs, jbcs-httpd24-mod_http2 2.0.29-13.el8jbcs, jbcs-httpd24-mod_security 2.9.6-19.el8jbcs, jbcs-httpd24-mod_jk 1.2.50-17.redhat_1.el8jbcs, jbcs-httpd24-mod_proxy_cluster 1.3.22-12.el8jbcs, jbcs-httpd24-mod_jk-ap24 1.2.50-17.redhat_1.el8jbcs
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 15 mo ago (2025-07-11)

Exploit prediction

0.91% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
OSV	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem	package	affected	fixed in
bitnami	apache	>=2.4.0, <2.4.64	2.4.64

Affected products

Apache Software Foundation Apache HTTP Server

Classification

Weakness

CWE-918 Server-Side Request Forgery

Technology feeds

Apache HTTP Server rss critical rss

References

httpd.apache.org /security/vulnerabilities_24.html
vendor-advisory, advisory
lists.debian.org /debian-lts-announce/2025/08/msg00009.html
web
openwall.com /lists/oss-security/2025/07/10/2
web
openwall.com /lists/oss-security/2025/07/10/4
web
nvd.nist.gov /vuln/detail/CVE-2024-43204
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary