CVE-2024-43204
published 2025-07-10CVE-2024-43204: 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…
PriorityP345high7.5CVSS 3.1
AVNACLPRNUINSUCNIHAN
EPSS
0.77%
51.9th percentile
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
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | http_server | >= 2.4.0 < 2.4.64 | 2.4.64 |
| apache_software_foundation | apache_http_server | 2.4.0 – 2.4.63 | — |
| debian | apache2 | < apache2 2.4.65-1~deb12u1 (bookworm) | apache2 2.4.65-1~deb12u1 (bookworm) |
| msrc | azl3_httpd_2.4.62-1_on_azure_linux_3.0 | — | — |
| msrc | azl3_httpd_2.4.64-1_on_azure_linux_3.0 | — | — |
| msrc | cbl2_httpd_2.4.62-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_httpd_2.4.64-1_on_cbl_mariner_2.0 | — | — |
| ubuntu | apache2 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
osv7.5HIGH
vendor_debian7.5HIGH
vendor_msrc7.5HIGH
vendor_oracle7.5HIGH
vendor_redhat7.5HIGH
vendor_ubuntu7.5HIGH
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Ubuntu
Apache HTTP Server regression
vendor_ubuntu·2026-05-29·CVSS 7.3
CVE-2023-38709 [HIGH] Apache HTTP Server regression
Title: Apache HTTP Server regression
Summary: USN-8338-1 introduced a regression in Apache HTTP Server
USN-8338-1 fixed vulnerabilities in Apache HTTP Server. The update
introduced a regression that prevented mod_http2 from loading on Ubuntu
18.04 LTS. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that Apache HTTP Server incorrectly handled certain
response headers. An attacker could possibly use this issue to perform
HTTP response splitting attacks. This issue only affected Ubuntu 14.04
LTS. (CVE-2023-38709)
Will Dormann and David Warren discovered that Apache HTTP Server's HTTP/2
implementation did not properly reclaim memory when streams were reset by
clients. A remote attacker could possibly use this issue to cause
Ubuntu
Apache HTTP Server vulnerabilities
vendor_ubuntu·2026-05-28·CVSS 7.3
CVE-2023-38709 [HIGH] Apache HTTP Server vulnerabilities
Title: Apache HTTP Server vulnerabilities
Summary: Several security issues were fixed in Apache HTTP Server.
It was discovered that Apache HTTP Server incorrectly handled certain
response headers. An attacker could possibly use this issue to perform
HTTP response splitting attacks. This issue only affected Ubuntu 14.04
LTS. (CVE-2023-38709)
Will Dormann and David Warren discovered that Apache HTTP Server's HTTP/2
implementation did not properly reclaim memory when streams were reset by
clients. A remote attacker could possibly use this issue to cause Apache
HTTP Server to consume resources, leading to a denial of service. This
issue only affected Ubuntu 18.04 LTS. (CVE-2023-45802)
Keran Mu and Jianjun Chen discovered that Apache HTTP Server incorrectly
handled certain response headers.
Oracle
Oracle Oracle Fusion Middleware Risk Matrix: mod_proxy (Apache HTTP Server) — CVE-2024-43204
vendor_oracle·2026-01-15·CVSS 7.5
CVE-2024-43204 [HIGH] Oracle Oracle Fusion Middleware Risk Matrix: mod_proxy (Apache HTTP Server) — CVE-2024-43204
Oracle Oracle Fusion Middleware Risk Matrix: mod_proxy (Apache HTTP Server) vulnerability
CVE: CVE-2024-43204
CVSS: 7.5
Protocol: HTTP
Remote exploit: Yes
Affected versions: Network
Advisory: cpujan2026 (JAN 2026)
Ubuntu
Apache HTTP Server vulnerabilities
vendor_ubuntu·2025-08-19·CVSS 7.5
CVE-2024-43204 [HIGH] Apache HTTP Server vulnerabilities
Title: Apache HTTP Server vulnerabilities
Summary: Several security issues were fixed in Apache HTTP Server.
USN-7639-1 fixed several vulnerabilities in Apache. This update
provides the corresponding update for Ubuntu 16.04 LTS, Ubuntu
18.04 LTS, Ubuntu 20.04 LTS, and addressed a regression
fix (LP: #2119395). CVE-2025-49630 and CVE-2025-53020 only
affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
Original advisory details:
It was discovered that the Apache HTTP Server incorrectly handled
certain Content-Type response headers. A remote attacker could
possibly use this issue to perform HTTP response splitting attacks.
(CVE-2024-42516)
xiaojunjie discovered that the Apache HTTP Server mod_proxy module
incorrectly handled certain requests. A remote attacker could
possibly use this issue to
Ubuntu
Apache HTTP Server vulnerabilities
vendor_ubuntu·2025-07-16·CVSS 7.5
CVE-2025-49812 [HIGH] Apache HTTP Server vulnerabilities
Title: Apache HTTP Server vulnerabilities
Summary: Several security issues were fixed in Apache HTTP Server.
It was discovered that the Apache HTTP Server incorrectly handled certain
Content-Type response headers. A remote attacker could possibly use this
issue to perform HTTP response splitting attacks. (CVE-2024-42516)
xiaojunjie discovered that the Apache HTTP Server mod_proxy module
incorrectly handled certain requests. A remote attacker could possibly use
this issue to send outbound proxy requests to an arbitrary URL.
(CVE-2024-43204)
John Runyon discovered that the Apache HTTP Server mod_ssl module
incorrectly escaped certain data. A remote attacker could possibly use this
issue to insert escape characters into log files. (CVE-2024-47252)
Sven Hebrok, Felix Cramer, Tim Storm, Ma
Red Hat
httpd: SSRF in Apache HTTP Server with mod_proxy loaded
vendor_redhat·2025-07-14·CVSS 7.5
CVE-2024-43204 [HIGH] CWE-918 httpd: SSRF in Apache HTTP Server with mod_proxy loaded
httpd: SSRF in Apache HTTP Server with mod_proxy loaded
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.
A Server-side request forgery (SSRF) vulnerability exists in Apache httpd when the server has mod_proxy loaded and is configured with mod_headers to modify the Content-Type header in the HTTP request or response using a value supplied by the user. Under this configuration, this flaw allows an attacker to craft specially crafted requests to manipulate the Content-T
Microsoft
Apache HTTP Server: SSRF with mod_headers setting Content-Type header
vendor_msrc·2025-07-08·CVSS 7.5
CVE-2024-43204 [HIGH] CWE-918 Apache HTTP Server: SSRF with mod_headers setting Content-Type header
Apache HTTP Server: SSRF with mod_headers setting Content-Type header
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
apache: apache
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Referenc
Debian
CVE-2024-43204: apache2 - SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outb...
vendor_debian·2024·CVSS 7.5
CVE-2024-43204 [HIGH] CVE-2024-43204: apache2 - SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outb...
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.
Scope: local
bookworm: resolved (fixed in 2.4.65-1~deb12u1)
bullseye: resolved (fixed in 2.4.65-1~deb11u1)
forky: resolved (fixed in 2.4.64-1)
sid: resolved (fixed in 2.4.64-1)
trixie: resolved (fixed in 2.4.64-1)
OSV
apache2 vulnerabilities
osv·2025-08-19·CVSS 7.5
CVE-2025-49630 [HIGH] apache2 vulnerabilities
apache2 vulnerabilities
USN-7639-1 fixed several vulnerabilities in Apache. This update
provides the corresponding update for Ubuntu 16.04 LTS, Ubuntu
18.04 LTS, Ubuntu 20.04 LTS, and addressed a regression
fix (LP: #2119395). CVE-2025-49630 and CVE-2025-53020 only
affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
Original advisory details:
It was discovered that the Apache HTTP Server incorrectly handled
certain Content-Type response headers. A remote attacker could
possibly use this issue to perform HTTP response splitting attacks.
(CVE-2024-42516)
xiaojunjie discovered that the Apache HTTP Server mod_proxy module
incorrectly handled certain requests. A remote attacker could
possibly use this issue to send outbound proxy requests to an
arbitrary URL. (CVE-2024-43204)
John Runyon disco
OSV
apache2 vulnerabilities
osv·2025-07-16·CVSS 7.5
CVE-2024-42516 [HIGH] apache2 vulnerabilities
apache2 vulnerabilities
It was discovered that the Apache HTTP Server incorrectly handled certain
Content-Type response headers. A remote attacker could possibly use this
issue to perform HTTP response splitting attacks. (CVE-2024-42516)
xiaojunjie discovered that the Apache HTTP Server mod_proxy module
incorrectly handled certain requests. A remote attacker could possibly use
this issue to send outbound proxy requests to an arbitrary URL.
(CVE-2024-43204)
John Runyon discovered that the Apache HTTP Server mod_ssl module
incorrectly escaped certain data. A remote attacker could possibly use this
issue to insert escape characters into log files. (CVE-2024-47252)
Sven Hebrok, Felix Cramer, Tim Storm, Maximilian Radoy, and Juraj
Somorovsky discovered that the Apache HTTP Server mod_ssl mo
OSV
CVE-2024-43204: SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker
osv·2025-07-10·CVSS 7.5
CVE-2024-43204 [HIGH] CVE-2024-43204: SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker
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.
OSV
CVE-2024-43204: SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker
osv·2025-07-10·CVSS 7.5
CVE-2024-43204 [HIGH] CVE-2024-43204: SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker
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.
GHSA
GHSA-q2wp-r77c-3cw8: SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker
ghsa_unreviewed·2025-07-10
CVE-2024-43204 [HIGH] CWE-918 GHSA-q2wp-r77c-3cw8: SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-07-10
Published