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Vulnerabilities / CVE-2023-25690

critical

CVE-2023-25690

httpd: HTTP request splitting with mod_rewrite and mod_proxy

Published Modified CWE 444
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Bitnami9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD, Azure Linux, Bitnami, CBL-Mariner, Photon OS. Rated lower by Red Hat (high), AlmaLinux (high), Amazon (high), Oracle (high), Rocky Linux (high), Ubuntu (medium).

Description

Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Request Smuggling attack. Configurations are affected when mod_proxy is enabled along with some form of RewriteRule or ProxyPassMatch in which a non-specific pattern matches some portion of the user-supplied request-target (URL) data and is then re-inserted into the proxied request-target using variable substitution. For example, something like: RewriteEngine on RewriteRule "^/here/(.*)" "http://example.com:8080/elsewhere?$1"; [P] ProxyPassReverse /here/ http://example.com:8080/ Request splitting/smuggling could result in bypass of access controls in the proxy server, proxying unintended URLs to existing origin servers, and cache poisoning. Users are recommended to update to at least version 2.4.56 of Apache HTTP Server.

Affected packages and fixed versions

SourcePackageFixed in
Azure Linux 3.0mod_http20:2.0.29-3.azl3
bitnami::Bitnami Vulnerability Databaseapache2.4.56
CBL-Mariner 1.0httpd0:2.4.56-1.cm1
CBL-Mariner 2.0httpd0:2.4.56-1.cm2
Photon OS 3.0httpd2.4.56-1.ph3
Photon OS 4.0httpd, httpd-devel, httpd-docs and 1 more2.4.56-1.ph4
alma 8httpd:2.4::httpd, httpd:2.4::httpd-devel, httpd:2.4::httpd-filesystem and 8 more2.4.37-51.module_el8.7.0+3515+9e4fe0d6.5 and 3 more
alma 9httpd, httpd-core, httpd-devel and 9 more2.4.53-7.el9_1.5 and 2 more
alpine 3.14apache22.4.56-r0
alpine 3.15apache22.4.56-r0
alpine 3.16apache22.4.56-r0
alpine 3.17apache22.4.56-r0
Show all 191 entries from 56 sources
SourcePackageFixed in
Azure Linux 3.0mod_http20:2.0.29-3.azl3
bitnami::Bitnami Vulnerability Databaseapache2.4.56
CBL-Mariner 1.0httpd0:2.4.56-1.cm1
CBL-Mariner 2.0httpd0:2.4.56-1.cm2
Photon OS 3.0httpd2.4.56-1.ph3
Photon OS 4.0httpd2.4.56-1.ph4
Photon OS 4.0httpd-devel2.4.56-1.ph4
Photon OS 4.0httpd-docs2.4.56-1.ph4
Photon OS 4.0httpd-tools2.4.56-1.ph4
alma 8httpd:2.4::httpd2.4.37-51.module_el8.7.0+3515+9e4fe0d6.5
alma 8httpd:2.4::httpd-devel2.4.37-51.module_el8.7.0+3515+9e4fe0d6.5
alma 8httpd:2.4::httpd-filesystem2.4.37-51.module_el8.7.0+3515+9e4fe0d6.5
alma 8httpd:2.4::httpd-manual2.4.37-51.module_el8.7.0+3515+9e4fe0d6.5
alma 8httpd:2.4::httpd-tools2.4.37-51.module_el8.7.0+3515+9e4fe0d6.5
alma 8httpd:2.4::mod_http21.15.7-5.module_el8.7.0+3515+9e4fe0d6.4
alma 8httpd:2.4::mod_ldap2.4.37-51.module_el8.7.0+3515+9e4fe0d6.5
alma 8httpd:2.4::mod_md1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa
alma 8httpd:2.4::mod_proxy_html1:2.4.37-51.module_el8.7.0+3515+9e4fe0d6.5
alma 8httpd:2.4::mod_session2.4.37-51.module_el8.7.0+3515+9e4fe0d6.5
alma 8httpd:2.4::mod_ssl1:2.4.37-51.module_el8.7.0+3515+9e4fe0d6.5
alma 9httpd2.4.53-7.el9_1.5
alma 9httpd-core2.4.53-7.el9_1.5
alma 9httpd-devel2.4.53-7.el9_1.5
alma 9httpd-filesystem2.4.53-7.el9_1.5
alma 9httpd-manual2.4.53-7.el9_1.5
alma 9httpd-tools2.4.53-7.el9_1.5
alma 9mod_http21.15.19-3.el9_1.5
alma 9mod_ldap2.4.53-7.el9_1.5
alma 9mod_lua2.4.53-7.el9_1.5
alma 9mod_proxy_html1:2.4.53-7.el9_1.5
alma 9mod_session2.4.53-7.el9_1.5
alma 9mod_ssl1:2.4.53-7.el9_1.5
alpine 3.14apache22.4.56-r0
alpine 3.15apache22.4.56-r0
alpine 3.16apache22.4.56-r0
alpine 3.17apache22.4.56-r0
alpine 3.18apache22.4.56-r0
alpine 3.19apache22.4.56-r0
alpine 3.20apache22.4.56-r0
alpine 3.21apache22.4.56-r0
alpine 3.22apache22.4.56-r0
alpine 3.23apache22.4.56-r0
alpine 3.24apache22.4.56-r0
alpine edgeapache22.4.56-r0
amazon linux 1httpd242.4.56-1.100.amzn1
amazon linux 1httpd24-debuginfo2.4.56-1.100.amzn1
amazon linux 1httpd24-devel2.4.56-1.100.amzn1
amazon linux 1httpd24-manual2.4.56-1.100.amzn1
amazon linux 1httpd24-tools2.4.56-1.100.amzn1
amazon linux 1mod24_ldap2.4.56-1.100.amzn1
amazon linux 1mod24_md2.4.56-1.100.amzn1
amazon linux 1mod24_proxy_html1:2.4.56-1.100.amzn1
amazon linux 1mod24_session2.4.56-1.100.amzn1
amazon linux 1mod24_ssl1:2.4.56-1.100.amzn1
amazon linux 2httpd2.4.56-1.amzn2
amazon linux 2httpd-debuginfo2.4.56-1.amzn2
amazon linux 2httpd-devel2.4.56-1.amzn2
amazon linux 2httpd-filesystem2.4.56-1.amzn2
amazon linux 2httpd-manual2.4.56-1.amzn2
amazon linux 2httpd-tools2.4.56-1.amzn2
amazon linux 2mod_ldap2.4.56-1.amzn2
amazon linux 2mod_md2.4.56-1.amzn2
amazon linux 2mod_proxy_html1:2.4.56-1.amzn2
amazon linux 2mod_session2.4.56-1.amzn2
amazon linux 2mod_ssl1:2.4.56-1.amzn2
amazon linux 2023httpd2.4.56-1.amzn2023
amazon linux 2023httpd-core2.4.56-1.amzn2023
amazon linux 2023httpd-core-debuginfo2.4.56-1.amzn2023
amazon linux 2023httpd-debuginfo2.4.56-1.amzn2023
amazon linux 2023httpd-debugsource2.4.56-1.amzn2023
amazon linux 2023httpd-devel2.4.56-1.amzn2023
amazon linux 2023httpd-filesystem2.4.56-1.amzn2023
amazon linux 2023httpd-manual2.4.56-1.amzn2023
amazon linux 2023httpd-tools2.4.56-1.amzn2023
amazon linux 2023httpd-tools-debuginfo2.4.56-1.amzn2023
amazon linux 2023mod_ldap2.4.56-1.amzn2023
amazon linux 2023mod_ldap-debuginfo2.4.56-1.amzn2023
amazon linux 2023mod_lua2.4.56-1.amzn2023
amazon linux 2023mod_lua-debuginfo2.4.56-1.amzn2023
amazon linux 2023mod_proxy_html1:2.4.56-1.amzn2023
amazon linux 2023mod_proxy_html-debuginfo1:2.4.56-1.amzn2023
amazon linux 2023mod_session2.4.56-1.amzn2023
amazon linux 2023mod_session-debuginfo2.4.56-1.amzn2023
amazon linux 2023mod_ssl1:2.4.56-1.amzn2023
amazon linux 2023mod_ssl-debuginfo1:2.4.56-1.amzn2023
debian 10apache22.4.38-3+deb10u10
debian 11apache22.4.56-1~deb11u1
debian 12apache22.4.56-1
debian 13apache22.4.56-1
debian 14apache22.4.56-1
echoapache22.4.56-1
Oracle Linux 7httpd2.4.6-98.0.3.el7_9.7
Oracle Linux 7httpd-devel2.4.6-98.0.3.el7_9.7
Oracle Linux 7httpd-manual2.4.6-98.0.3.el7_9.7
Oracle Linux 7httpd-tools2.4.6-98.0.3.el7_9.7
Oracle Linux 7mod_ldap2.4.6-98.0.3.el7_9.7
Oracle Linux 7mod_proxy_html1:2.4.6-98.0.3.el7_9.7
Oracle Linux 7mod_session2.4.6-98.0.3.el7_9.7
Oracle Linux 7mod_ssl1:2.4.6-98.0.3.el7_9.7
Oracle Linux 8httpd2.4.37-51.0.1.module+el8.7.0+21029+de29ba63.5
Oracle Linux 8httpd-devel2.4.37-51.0.1.module+el8.7.0+21029+de29ba63.5
Oracle Linux 8httpd-filesystem2.4.37-51.0.1.module+el8.7.0+21029+de29ba63.5
Oracle Linux 8httpd-manual2.4.37-51.0.1.module+el8.7.0+21029+de29ba63.5
Oracle Linux 8httpd-tools2.4.37-51.0.1.module+el8.7.0+21029+de29ba63.5
Oracle Linux 8mod_http21.15.7-5.module+el8.7.0+21029+de29ba63.4
Oracle Linux 8mod_ldap2.4.37-51.0.1.module+el8.7.0+21029+de29ba63.5
Oracle Linux 8mod_md1:2.0.8-8.module+el8.5.0+20475+4f6a8fd5
Oracle Linux 8mod_proxy_html1:2.4.37-51.0.1.module+el8.7.0+21029+de29ba63.5
Oracle Linux 8mod_session2.4.37-51.0.1.module+el8.7.0+21029+de29ba63.5
Oracle Linux 8mod_ssl1:2.4.37-51.0.1.module+el8.7.0+21029+de29ba63.5
Oracle Linux 9httpd2.4.53-7.0.1.el9_1.5
Oracle Linux 9httpd-core2.4.53-7.0.1.el9_1.5
Oracle Linux 9httpd-devel2.4.53-7.0.1.el9_1.5
Oracle Linux 9httpd-filesystem2.4.53-7.0.1.el9_1.5
Oracle Linux 9httpd-manual2.4.53-7.0.1.el9_1.5
Oracle Linux 9httpd-tools2.4.53-7.0.1.el9_1.5
Oracle Linux 9mod_http21.15.19-3.el9_1.5
Oracle Linux 9mod_ldap2.4.53-7.0.1.el9_1.5
Oracle Linux 9mod_lua2.4.53-7.0.1.el9_1.5
Oracle Linux 9mod_proxy_html1:2.4.53-7.0.1.el9_1.5
Oracle Linux 9mod_session2.4.53-7.0.1.el9_1.5
Oracle Linux 9mod_ssl1:2.4.53-7.0.1.el9_1.5
rapidfort amazon linux 2023httpd1:2.4.56-1.amzn2023
rapidfort amazon linux 2023httpd-core2.4.56-1.amzn2023
rapidfort amazon linux 2023httpd-devel2.4.56-1.amzn2023
rapidfort amazon linux 2023httpd-filesystem2.4.56-1.amzn2023
rapidfort amazon linux 2023httpd-manual2.4.56-1.amzn2023
rapidfort amazon linux 2023httpd-tools2.4.56-1.amzn2023
rapidfort amazon linux 2023mod_ldap2.4.56-1.amzn2023
rapidfort amazon linux 2023mod_lua2.4.56-1.amzn2023
rapidfort amazon linux 2023mod_proxy_html1:2.4.56-1.amzn2023
rapidfort amazon linux 2023mod_session2.4.56-1.amzn2023
rapidfort amazon linux 2023mod_ssl1:2.4.56-1.amzn2023
rapidfort Oracle Linux 9httpd0:2.4.53-7.0.1.el9_1.5
rapidfort Oracle Linux 9httpd-core0:2.4.53-7.0.1.el9_1.5
rapidfort Oracle Linux 9httpd-devel0:2.4.53-7.0.1.el9_1.5
rapidfort Oracle Linux 9httpd-filesystem0:2.4.53-7.0.1.el9_1.5
rapidfort Oracle Linux 9httpd-manual0:2.4.53-7.0.1.el9_1.5
rapidfort Oracle Linux 9httpd-tools0:2.4.53-7.0.1.el9_1.5
rapidfort Oracle Linux 9mod_http20:1.15.19-3.el9_1.5
rapidfort Oracle Linux 9mod_ldap0:2.4.53-7.0.1.el9_1.5
rapidfort Oracle Linux 9mod_lua0:2.4.53-7.0.1.el9_1.5
rapidfort Oracle Linux 9mod_proxy_html1:2.4.53-7.0.1.el9_1.5
rapidfort Oracle Linux 9mod_session0:2.4.53-7.0.1.el9_1.5
rapidfort Oracle Linux 9mod_ssl1:2.4.53-7.0.1.el9_1.5
rapidfort ubuntu 20.04apache20:2.4.52-1ubuntu4.4
rapidfort ubuntu 20.04rf-apache20:2.4.52-1ubuntu4.4
rapidfort ubuntu 22.04apache20:2.4.52-1ubuntu4.4
rapidfort ubuntu 22.04rf-apache20:2.4.52-1ubuntu4.4
rapidfort ubuntu 24.04apache20:2.4.52-1ubuntu4.4
rapidfort ubuntu 24.04rf-apache20:2.4.52-1ubuntu4.4
rocky 8httpd:2.4::httpd2.4.37-51.module+el8.7.0+1059+126e9251
rocky 8httpd:2.4::httpd-devel2.4.37-51.module+el8.7.0+1059+126e9251
rocky 8httpd:2.4::httpd-filesystem2.4.37-51.module+el8.7.0+1059+126e9251
rocky 8httpd:2.4::httpd-manual2.4.37-51.module+el8.7.0+1059+126e9251
rocky 8httpd:2.4::httpd-tools2.4.37-51.module+el8.7.0+1059+126e9251
rocky 8httpd:2.4::mod_http21.15.7-5.module+el8.6.0+823+f143cee1
rocky 8httpd:2.4::mod_ldap2.4.37-51.module+el8.7.0+1059+126e9251
rocky 8httpd:2.4::mod_md1:2.0.8-8.module+el8.5.0+695+1fa8055e
rocky 8httpd:2.4::mod_proxy_html1:2.4.37-51.module+el8.7.0+1059+126e9251
rocky 8httpd:2.4::mod_session2.4.37-51.module+el8.7.0+1059+126e9251
rocky 8httpd:2.4::mod_ssl1:2.4.37-51.module+el8.7.0+1059+126e9251
rocky 9httpd2.4.53-7.el9_1.5
rocky 9httpd-core2.4.53-7.el9_1.5
rocky 9httpd-devel2.4.53-7.el9_1.5
rocky 9httpd-filesystem2.4.53-7.el9_1.5
rocky 9httpd-manual2.4.53-7.el9_1.5
rocky 9httpd-tools2.4.53-7.el9_1.5
rocky 9mod_http21.15.19-3.el9_1.5
rocky 9mod_ldap2.4.53-7.el9_1.5
rocky 9mod_lua2.4.53-7.el9_1.5
rocky 9mod_proxy_html1:2.4.53-7.el9_1.5
rocky 9mod_session2.4.53-7.el9_1.5
rocky 9mod_ssl1:2.4.53-7.el9_1.5
root.io debian 12rootio-apache22.4.56-1
root.io debian 13rootio-apache22.4.56-1
ubuntu 16.04-ESMapache22.4.18-2ubuntu3.17+esm10
ubuntu 18.04apache22.4.29-1ubuntu4.27
ubuntu 18.04-ESMapache22.4.29-1ubuntu4.27
ubuntu 20.04apache22.4.41-4ubuntu3.14
ubuntu 20.04-ESMapache22.4.41-4ubuntu3.14
ubuntu 22.04apache22.4.52-1ubuntu4.4
ubuntu 22.10apache22.4.54-2ubuntu1.2
ubuntu 23.04apache22.4.55-1ubuntu2
ubuntu 23.10apache22.4.55-1ubuntu2
ubuntu 24.04apache22.4.55-1ubuntu2
ubuntu 24.10apache22.4.55-1ubuntu2
ubuntu 25.04apache22.4.55-1ubuntu2
ubuntu 25.10apache22.4.55-1ubuntu2
ubuntu 26.04apache22.4.55-1ubuntu2
ubuntu 26.10apache22.4.55-1ubuntu2

References

All 18 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.