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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server | 2.4.0 – ≤ 2.4.63 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | apache2 | 2.4.64-1 | — |
| Debian 13 | apache2 | 2.4.64-1 | — |
| Debian 12 | apache2 | 2.4.65-1~deb12u1 | — |
| Debian 11 | apache2 | 2.4.65-1~deb11u1 | DLA-4270-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | apache2 | 2.4.64-1ubuntu2 | — |
| Ubuntu 24.04 LTS | apache2 | 2.4.58-1ubuntu8.7 | USN-7639-1 |
| Ubuntu 22.04 LTS | apache2 | 2.4.52-1ubuntu4.15 | USN-7639-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | apache2 | 2.4.41-4ubuntu3.23+esm2 | USN-8338-1, USN-7639-2 |
| Ubuntu Pro 18.04 LTS | apache2 | 2.4.29-1ubuntu4.27+esm6 | USN-8338-1, USN-7639-2 |
| Ubuntu Pro 16.04 LTS | apache2 | 2.4.18-2ubuntu3.17+esm16 | USN-8338-1, USN-7639-2 |
| Ubuntu Pro 14.04 LTS | apache2 | 2.4.7-1ubuntu4.22+esm12 | USN-8338-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat JBoss Core Services 1 | jbcs-httpd24-httpd +6 | 2.4.62-16.el8jbcs | RHSA-2026:56868 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_http2 | 2.0.29-13.el8jbcs | RHSA-2026:56868 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_ssl +1 | 1:2.4.62-16.el8jbcs | RHSA-2026:56868 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | apache2 | 2.4.51-150400.6.46.1 | SUSE-SU-2025:02685-1, SUSE-SU-2025:02682-1 |
| SLES 15 SP7 | apache2-devel +4 | 2.4.62-150700.4.3.1 | SUSE-SU-2025:02685-1 |
| SLES 15 SP6 | apache2 | 2.4.51-150400.6.46.1 | SUSE-SU-2025:02684-1, SUSE-SU-2025:02682-1 |
| SLES 15 SP6 | apache2-devel +4 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 |
| SLES 15 SP5 | apache2 | 2.4.51-150400.6.46.1 | SUSE-SU-2026:2686-1, SUSE-SU-2025:02682-1 |
| SLES 15 SP4 | apache2 | 2.4.51-150400.6.46.1 | SUSE-SU-2026:2686-1, SUSE-SU-2025:02682-1 |
| SLES 15 SP3 | apache2 | 2.4.51-150200.3.82.1 | SUSE-SU-2025:02683-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | apache2 +1 | 2.4.51-35.69.1 | SUSE-SU-2025:02565-1 |
| SLES for SAP 15 SP5 | apache2 | 2.4.51-150400.6.46.1 | SUSE-SU-2026:2686-1, SUSE-SU-2025:02682-1 |
| SLES for SAP 15 SP4 | apache2 | 2.4.51-150400.6.46.1 | SUSE-SU-2026:2686-1, SUSE-SU-2025:02682-1 |
| SLES for SAP 15 SP3 | apache2 | 2.4.51-150200.3.82.1 | SUSE-SU-2025:02683-1 |
| SLE HPC 15 SP5 | apache2 | 2.4.51-150400.6.46.1 | SUSE-SU-2026:2686-1, SUSE-SU-2025:02682-1 |
| SLE HPC 15 SP4 | apache2 | 2.4.51-150400.6.46.1 | SUSE-SU-2026:2686-1, SUSE-SU-2025:02682-1 |
| SLE HPC 15 SP3 | apache2 | 2.4.51-150200.3.82.1 | SUSE-SU-2025:02683-1 |
| SUSE Manager Server 4.3 | apache2 | 2.4.51-150400.6.46.1 | SUSE-SU-2025:02682-1 |
| SUSE Manager Proxy 4.3 | apache2 | 2.4.51-150400.6.46.1 | SUSE-SU-2025:02682-1 |
| SUSE Enterprise Storage 7.1 | apache2 | 2.4.51-150200.3.82.1 | SUSE-SU-2025:02683-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | apache2 | 2.4.64-1.1 | openSUSE-SU-2025:15360-1 |
| openSUSE Leap 15.6 | apache2 +6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | apache2 | 2.4.64-r0 | — |
| Alpine v3.23 | apache2 | 2.4.64-r0 | — |
| Alpine v3.22 | apache2 | 2.4.64-r0 | — |
| Alpine v3.21 | apache2 | 2.4.64-r0 | — |
| Alpine v3.20 | apache2 | 2.4.64-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | apache2 | 2.4.64-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | httpd +8 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 |
| Amazon Linux 2023 | mod_ssl +1 | 1:2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 |
| Amazon Linux 2 | httpd +7 | 2.4.64-1.amzn2.0.1 | ALAS2-2025-2958 |
| Amazon Linux 2 | mod_ssl +1 | 1:2.4.64-1.amzn2.0.1 | ALAS2-2025-2958 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | httpd | 2.4.64-1 | — |
| Azure Linux 2 (CBL-Mariner) | httpd | 2.4.64-1 | — |
Advisories 18
- WID-SEC-2025-1529 Apache HTTP Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- RHSA-2026:56868 Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.62 SP5 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- WID-SEC-2026-0162 Oracle Fusion Middleware: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 24, 2026
- SUSE-SU-2026:2686-1 Security update for apache2 SUSE / openSUSE Security Updates · Jul 1, 2026
- USN-7639-2 apache2 vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- USN-8338-1 apache2 vulnerabilities Ubuntu Security Notices (USN) · May 29, 2026
- USN-7639-1 apache2 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2025:15360-1 apache2-2.4.64-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:02683-1 Security update for apache2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:02682-1 Security update for apache2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:02684-1 Security update for apache2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:02685-1 Security update for apache2 SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-4270-1 apache2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2025:02565-1 Security update for apache2 SUSE / openSUSE Security Updates · Feb 4, 2026
- NCSC-2026-0027 Kwetsbaarheden verholpen in Oracle Fusion Middleware NCSC-NL (Netherlands) · Jan 21, 2026
- WID-SEC-2025-1850 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Nov 17, 2025
- ALAS2023-2025-1125 Important: httpd security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 8, 2025
- ALAS2-2025-2958 Important: httpd security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 4, 2025
References
- https://httpd.apache.org/security/vulnerabilities_24.html vendor-advisory