CVE-2025-49630
Apache HTTP Server: mod_proxy_http2 denial of service
CVE-2025-49630 is fixed in 35 products on 1 platform, first by apache2 2.4.29-1ubuntu4.27+esm6, released July 10, 2025. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.5
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0135
71st percentile
In certain proxy configurations, a denial of service attack against ApacheHTTP Server versions 2.4.26 through to 2.4.63 can be triggered by untrustedclients causing an assertion in mod_proxy_http2.Configurations affected are a reverse proxy is configured for an HTTP/2backend, with ProxyPreserveHost set to "on".
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| apache2 · Debian 12.15 (bookworm) | 2.4.65-1~deb12u1 | DEBIAN-CVE-2025-49630 | Jul 10, 2025 |
| apache2 · Debian 13.5 (trixie) | 2.4.64-1 | DEBIAN-CVE-2025-49630 | Jul 10, 2025 |
| apache2 · Debian 14 | 2.4.64-1 | DEBIAN-CVE-2025-49630 | Jul 10, 2025 |
| apache2 · Ubuntu 18.04.6 LTS (bionic) | 2.4.29-1ubuntu4.27+esm6 | apache2 2.4.29-1ubuntu4.27+esm6 | Jul 10, 2025 |
| apache2 · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm2 | apache2 2.4.41-4ubuntu3.23+esm2 | Jul 10, 2025 |
| apache2 · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.15 | apache2 2.4.52-1ubuntu4.15 | Jul 10, 2025 |
| apache2 · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.7 | apache2 2.4.58-1ubuntu8.7 | Jul 10, 2025 |
| apache2 · Ubuntu 25.04 (plucky) | 2.4.63-1ubuntu1.1 | apache2 2.4.63-1ubuntu1.1 | Jan 16, 2026 |
| apache2 · opensuse-leap 15.6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 | Aug 4, 2025 |
| apache2 · sles 15.6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 | Aug 4, 2025 |
| apache2 · sles 15.7 | 2.4.62-150700.4.3.1 | SUSE-SU-2025:02685-1 | Aug 4, 2025 |
| apache2-bin · Ubuntu 18.04.6 LTS (bionic) | 2.4.29-1ubuntu4.27+esm6 | apache2-bin 2.4.29-1ubuntu4.27+esm6 | Jul 10, 2025 |
| apache2-bin · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm2 | apache2-bin 2.4.41-4ubuntu3.23+esm2 | Jul 10, 2025 |
| apache2-bin · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.15 | apache2-bin 2.4.52-1ubuntu4.15 | Jul 10, 2025 |
| apache2-bin · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.7 | apache2-bin 2.4.58-1ubuntu8.7 | Jul 10, 2025 |
| apache2-bin · Ubuntu 25.04 (plucky) | 2.4.63-1ubuntu1.1 | apache2-bin 2.4.63-1ubuntu1.1 | Jan 16, 2026 |
| apache2-data · Ubuntu 18.04.6 LTS (bionic) | 2.4.29-1ubuntu4.27+esm6 | apache2-data 2.4.29-1ubuntu4.27+esm6 | Jul 10, 2025 |
| apache2-data · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm2 | apache2-data 2.4.41-4ubuntu3.23+esm2 | Jul 10, 2025 |
| apache2-data · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.15 | apache2-data 2.4.52-1ubuntu4.15 | Jul 10, 2025 |
| apache2-data · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.7 | apache2-data 2.4.58-1ubuntu8.7 | Jul 10, 2025 |
| apache2-data · Ubuntu 25.04 (plucky) | 2.4.63-1ubuntu1.1 | apache2-data 2.4.63-1ubuntu1.1 | Jan 16, 2026 |
| apache2-devel · opensuse-leap 15.6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 | Aug 4, 2025 |
| apache2-devel · sles 15.6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 | Aug 4, 2025 |
| apache2-devel · sles 15.7 | 2.4.62-150700.4.3.1 | SUSE-SU-2025:02685-1 | Aug 4, 2025 |
| apache2-event · opensuse-leap 15.6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 | Aug 4, 2025 |
| apache2-event · sles 15.6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 | Aug 4, 2025 |
| apache2-event · sles 15.7 | 2.4.62-150700.4.3.1 | SUSE-SU-2025:02685-1 | Aug 4, 2025 |
| apache2-manual · opensuse-leap 15.6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 | Aug 4, 2025 |
| apache2-prefork · opensuse-leap 15.6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 | Aug 4, 2025 |
| apache2-prefork · sles 15.6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 | Aug 4, 2025 |
| apache2-prefork · sles 15.7 | 2.4.62-150700.4.3.1 | SUSE-SU-2025:02685-1 | Aug 4, 2025 |
| apache2-suexec-custom · Ubuntu 18.04.6 LTS (bionic) | 2.4.29-1ubuntu4.27+esm6 | apache2-suexec-custom 2.4.29-1ubuntu4.27+esm6 | Jul 10, 2025 |
| apache2-suexec-custom · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm2 | apache2-suexec-custom 2.4.41-4ubuntu3.23+esm2 | Jul 10, 2025 |
| apache2-suexec-custom · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.15 | apache2-suexec-custom 2.4.52-1ubuntu4.15 | Jul 10, 2025 |
| apache2-suexec-custom · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.7 | apache2-suexec-custom 2.4.58-1ubuntu8.7 | Jul 10, 2025 |
| apache2-suexec-custom · Ubuntu 25.04 (plucky) | 2.4.63-1ubuntu1.1 | apache2-suexec-custom 2.4.63-1ubuntu1.1 | Jan 16, 2026 |
| apache2-suexec-pristine · Ubuntu 18.04.6 LTS (bionic) | 2.4.29-1ubuntu4.27+esm6 | apache2-suexec-pristine 2.4.29-1ubuntu4.27+esm6 | Jul 10, 2025 |
| apache2-suexec-pristine · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm2 | apache2-suexec-pristine 2.4.41-4ubuntu3.23+esm2 | Jul 10, 2025 |
| apache2-suexec-pristine · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.15 | apache2-suexec-pristine 2.4.52-1ubuntu4.15 | Jul 10, 2025 |
| apache2-suexec-pristine · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.7 | apache2-suexec-pristine 2.4.58-1ubuntu8.7 | Jul 10, 2025 |
| apache2-suexec-pristine · Ubuntu 25.04 (plucky) | 2.4.63-1ubuntu1.1 | apache2-suexec-pristine 2.4.63-1ubuntu1.1 | Jan 16, 2026 |
| apache2-utils · Ubuntu 18.04.6 LTS (bionic) | 2.4.29-1ubuntu4.27+esm6 | apache2-utils 2.4.29-1ubuntu4.27+esm6 | Jul 10, 2025 |
| apache2-utils · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm2 | apache2-utils 2.4.41-4ubuntu3.23+esm2 | Jul 10, 2025 |
| apache2-utils · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.15 | apache2-utils 2.4.52-1ubuntu4.15 | Jul 10, 2025 |
| apache2-utils · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.7 | apache2-utils 2.4.58-1ubuntu8.7 | Jul 10, 2025 |
| apache2-utils · Ubuntu 25.04 (plucky) | 2.4.63-1ubuntu1.1 | apache2-utils 2.4.63-1ubuntu1.1 | Jan 16, 2026 |
| apache2-utils · opensuse-leap 15.6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 | Aug 4, 2025 |
| apache2-utils · sles 15.6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 | Aug 4, 2025 |
| apache2-utils · sles 15.7 | 2.4.62-150700.4.3.1 | SUSE-SU-2025:02685-1 | Aug 4, 2025 |
| apache2-worker · opensuse-leap 15.6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 | Aug 4, 2025 |
| apache2-worker · sles 15.6 | 2.4.58-150600.5.35.1 | SUSE-SU-2025:02684-1 | Aug 4, 2025 |
| apache2-worker · sles 15.7 | 2.4.62-150700.4.3.1 | SUSE-SU-2025:02685-1 | Aug 4, 2025 |
| httpd · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23369+11a81384.5 | RHSA-2025:15123 | Sep 3, 2025 |
| httpd · almalinux 8 | 2.4.37-65.module_el8.10.0+4044+ea5f78b1.5 | ALSA-2025:15123 | Sep 3, 2025 |
| httpd · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| httpd · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90652+bef864ba.5 | ELSA-2025-15123 | Sep 4, 2025 |
| httpd · rocky 8 | 0:2.4.37-65.module+el8.10.0+1840+b070a976.1 | RLSA-2025:15123 | Sep 8, 2025 |
| httpd-core · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| httpd-core-debuginfo · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| httpd-debuginfo · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| httpd-debugsource · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| httpd-devel · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23369+11a81384.5 | RHSA-2025:15123 | Sep 3, 2025 |
| httpd-devel · almalinux 8 | 2.4.37-65.module_el8.10.0+4044+ea5f78b1.5 | ALSA-2025:15123 | Sep 3, 2025 |
| httpd-devel · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| httpd-devel · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90652+bef864ba.5 | ELSA-2025-15123 | Sep 4, 2025 |
| httpd-filesystem · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23369+11a81384.5 | RHSA-2025:15123 | Sep 3, 2025 |
| httpd-filesystem · almalinux 8 | 2.4.37-65.module_el8.10.0+4044+ea5f78b1.5 | ALSA-2025:15123 | Sep 3, 2025 |
| httpd-filesystem · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| httpd-filesystem · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90652+bef864ba.5 | ELSA-2025-15123 | Sep 4, 2025 |
| httpd-manual · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23369+11a81384.5 | RHSA-2025:15123 | Sep 3, 2025 |
| httpd-manual · almalinux 8 | 2.4.37-65.module_el8.10.0+4044+ea5f78b1.5 | ALSA-2025:15123 | Sep 3, 2025 |
| httpd-manual · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| httpd-manual · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90652+bef864ba.5 | ELSA-2025-15123 | Sep 4, 2025 |
| httpd-tools · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23369+11a81384.5 | RHSA-2025:15123 | Sep 3, 2025 |
| httpd-tools · almalinux 8 | 2.4.37-65.module_el8.10.0+4044+ea5f78b1.5 | ALSA-2025:15123 | Sep 3, 2025 |
| httpd-tools · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| httpd-tools · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90652+bef864ba.5 | ELSA-2025-15123 | Sep 4, 2025 |
| httpd-tools-debuginfo · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| libapache2-mod-md · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm2 | libapache2-mod-md 2.4.41-4ubuntu3.23+esm2 | Jul 10, 2025 |
| libapache2-mod-md · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.15 | libapache2-mod-md 2.4.52-1ubuntu4.15 | Jul 10, 2025 |
| libapache2-mod-md · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.7 | libapache2-mod-md 2.4.58-1ubuntu8.7 | Jul 10, 2025 |
| libapache2-mod-proxy-uwsgi · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm2 | libapache2-mod-proxy-uwsgi 2.4.41-4ubuntu3.23+esm2 | Jul 10, 2025 |
| libapache2-mod-proxy-uwsgi · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.15 | libapache2-mod-proxy-uwsgi 2.4.52-1ubuntu4.15 | Jul 10, 2025 |
| libapache2-mod-proxy-uwsgi · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.7 | libapache2-mod-proxy-uwsgi 2.4.58-1ubuntu8.7 | Jul 10, 2025 |
| mod_http2 · RHEL 10 | 2.0.29-2.el10_0.1 | RHSA-2025:14625 | Jul 14, 2025 |
| mod_http2 · RHEL 8 | 0:1.15.7-10.module+el8.10.0+23369+11a81384.4 | RHSA-2025:15123 | Sep 3, 2025 |
| mod_http2 · RHEL 9 | 0:2.0.26-4.el9_6.1 | RHSA-2025:14983 | Sep 2, 2025 |
| mod_http2 · almalinux 10 | 2.0.29-2.el10_0.1 | ALSA-2025:14625 | Aug 26, 2025 |
| mod_http2 · almalinux 8 | 1.15.7-10.module_el8.10.0+4044+ea5f78b1.4 | ALSA-2025:15123 | Sep 3, 2025 |
| mod_http2 · almalinux 9 | 2.0.26-4.el9_6.1 | ALSA-2025:14983 | Sep 2, 2025 |
| mod_http2 · ol 10 | 0:2.0.29-2.el10_0.1 | ELSA-2025-14625 | Aug 26, 2025 |
| mod_http2 · ol 8 | 0:1.15.7-10.module+el8.10.0+90652+bef864ba.4 | ELSA-2025-15123 | Sep 4, 2025 |
| mod_http2 · ol 9 | 0:2.0.26-4.el9_6.1 | ELSA-2025-14983 | Sep 1, 2025 |
| mod_http2 · rocky 10 | 0:2.0.29-2.el10_0.1 | RLSA-2025:14625 | Oct 3, 2025 |
| mod_http2 · rocky 8 | 0:1.15.7-10.module+el8.10.0+1830+22f0c9e0 | RLSA-2025:15123 | Sep 8, 2025 |
| mod_http2 · rocky 9 | 0:2.0.26-4.el9_6.1 | RLSA-2025:14983 | Oct 10, 2025 |
| mod_ldap · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23369+11a81384.5 | RHSA-2025:15123 | Sep 3, 2025 |
| mod_ldap · almalinux 8 | 2.4.37-65.module_el8.10.0+4044+ea5f78b1.5 | ALSA-2025:15123 | Sep 3, 2025 |
| mod_ldap · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| mod_ldap · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90652+bef864ba.5 | ELSA-2025-15123 | Sep 4, 2025 |
| mod_ldap-debuginfo · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| mod_lua · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| mod_lua-debuginfo · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| mod_md · RHEL 8 | 1:2.0.8-8.module+el8.9.0+19080+567b90f8 | RHSA-2025:15123 | Sep 3, 2025 |
| mod_md · almalinux 8 | 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa | ALSA-2025:15123 | Sep 3, 2025 |
| mod_md · ol 8 | 1:2.0.8-8.module+el8.9.0+90011+2f9c6a23 | ELSA-2025-15123 | Sep 4, 2025 |
| mod_md · rocky 8 | 1:2.0.8-8.module+el8.9.0+1370+89cc8ad5 | RLSA-2025:15123 | Sep 8, 2025 |
| mod_proxy_html · RHEL 8 | 1:2.4.37-65.module+el8.10.0+23369+11a81384.5 | RHSA-2025:15123 | Sep 3, 2025 |
| mod_proxy_html · almalinux 8 | 1:2.4.37-65.module_el8.10.0+4044+ea5f78b1.5 | ALSA-2025:15123 | Sep 3, 2025 |
| mod_proxy_html · amzn 2023 | 1:2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| mod_proxy_html · ol 8 | 1:2.4.37-65.0.1.module+el8.10.0+90652+bef864ba.5 | ELSA-2025-15123 | Sep 4, 2025 |
| mod_proxy_html-debuginfo · amzn 2023 | 1:2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| mod_session · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23369+11a81384.5 | RHSA-2025:15123 | Sep 3, 2025 |
| mod_session · almalinux 8 | 2.4.37-65.module_el8.10.0+4044+ea5f78b1.5 | ALSA-2025:15123 | Sep 3, 2025 |
| mod_session · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| mod_session · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90652+bef864ba.5 | ELSA-2025-15123 | Sep 4, 2025 |
| mod_session-debuginfo · amzn 2023 | 2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| mod_ssl · RHEL 8 | 1:2.4.37-65.module+el8.10.0+23369+11a81384.5 | RHSA-2025:15123 | Sep 3, 2025 |
| mod_ssl · almalinux 8 | 1:2.4.37-65.module_el8.10.0+4044+ea5f78b1.5 | ALSA-2025:15123 | Sep 3, 2025 |
| mod_ssl · amzn 2023 | 1:2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
| mod_ssl · ol 8 | 1:2.4.37-65.0.1.module+el8.10.0+90652+bef864ba.5 | ELSA-2025-15123 | Sep 4, 2025 |
| mod_ssl-debuginfo · amzn 2023 | 1:2.4.64-1.amzn2023.0.1 | ALAS2023-2025-1125 | Jul 29, 2025 |
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