CVE-2026-56153

Apache HTTP Server: mod_charset_lite: Heap overflow in finish_partial_char

CVE-2026-56153 is fixed in 30 products on 1 platform, first by DEBIAN-CVE-2026-56153, released October 5, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
9.4
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0047
40th percentile

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fix(es): * httpd: httpd: HTTP response smuggling via crafted Transfer-Encoding response in mod_proxy_uwsgi (CVE-2026-63718) * httpd: httpd: Denial of Service via integer overflow in mod_dav_fs (CVE-2026-93546) * httpd: httpd: Authentication state corruption via concurrent Digest authentication requests (CVE-2026-73637) * httpd: httpd: unauthorized connection to arbitrary hosts via crafted FTP PASV response (CVE-2026-63045) * httpd: httpd: Arbitrary code execution via oversized Host header in mod_vhost_alias (CVE-2026-63292) * httpd: httpd: mod_heartmonitor: Denial of Service via NULL pointer dereference (CVE-2026-46729) * httpd: httpd: Authentication bypass via credential replay in mod_auth_digest (CVE-2026-73636) * httpd: httpd: Denial of Service via charset conversion failure in mod_xml2enc (CVE-2026-63686) * httpd: httpd: Denial of service via forged Authorization headers in mod_auth_digest (CVE-2026-48005) * httpd: httpd: Denial of Service via mod_rewrite lookahead (CVE-2026-56154) * httpd: httpd: Denial of Service via heap-based buffer overflow in mod_charset_lite (CVE-2026-56153) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Where it's fixed

ProductFixed inFixReleased
Linux
apache2 · Debian 13.5 (trixie) 2.4.69-1~deb13u1 DEBIAN-CVE-2026-56153 Oct 5, 2026
apache2 · Debian 14 2.4.69-1 DEBIAN-CVE-2026-56153 Oct 5, 2026
apache2 · sles 15.6 2.4.66-150600.5.58.1 SUSE-SU-2026:5075-1 Nov 7, 2026
apache2 · sles 15.7 2.4.66-150700.4.26.1 SUSE-SU-2026:5077-1 Nov 7, 2026
apache2-devel · sles 15.6 2.4.66-150600.5.58.1 SUSE-SU-2026:5075-1 Nov 7, 2026
apache2-devel · sles 15.7 2.4.66-150700.4.26.1 SUSE-SU-2026:5077-1 Nov 7, 2026
apache2-event · sles 15.7 2.4.66-150700.4.26.1 SUSE-SU-2026:5077-1 Nov 7, 2026
apache2-manual · sles 15.6 2.4.66-150600.5.58.1 SUSE-SU-2026:5075-1 Nov 7, 2026
apache2-manual · sles 15.7 2.4.66-150700.4.26.1 SUSE-SU-2026:5077-1 Nov 7, 2026
apache2-prefork · sles 15.6 2.4.66-150600.5.58.1 SUSE-SU-2026:5075-1 Nov 7, 2026
apache2-prefork · sles 15.7 2.4.66-150700.4.26.1 SUSE-SU-2026:5077-1 Nov 7, 2026
apache2-utils · sles 15.6 2.4.66-150600.5.58.1 SUSE-SU-2026:5075-1 Nov 7, 2026
apache2-utils · sles 15.7 2.4.66-150700.4.26.1 SUSE-SU-2026:5077-1 Nov 7, 2026
apache2-worker · sles 15.6 2.4.66-150600.5.58.1 SUSE-SU-2026:5075-1 Nov 7, 2026
apache2-worker · sles 15.7 2.4.66-150700.4.26.1 SUSE-SU-2026:5077-1 Nov 7, 2026
httpd · RHEL 10 2.4.63-13.el10_2.8 RHSA-2026:89860 Oct 27, 2026
httpd · RHEL 8 0:2.4.37-65.module+el8.10.0+25092+6f3ea0dd.13 RHSA-2026:92616 Oct 30, 2026
httpd · RHEL 9 0:2.4.62-13.el9_8.9 RHSA-2026:88229 Oct 24, 2026
httpd · almalinux 10 2.4.63-13.el10_2.8 ALSA-2026:89860 Nov 7, 2026
httpd · almalinux 8 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 ALSA-2026:92616 Nov 7, 2026
httpd · almalinux 9 2.4.62-13.el9_8.9 ALSA-2026:88229 Nov 7, 2026
httpd · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
httpd · ol 10 0:2.4.63-13.0.1.el10_2.8 ELSA-2026-89860 Nov 7, 2026
httpd · ol 8 0:2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8 ELSA-2026-92616 Nov 7, 2026
httpd · ol 9 0:2.4.62-13.0.1.el9_8.9 ELSA-2026-88229 Nov 7, 2026
httpd · rocky 10 0:2.4.63-13.el10_2.8 RLSA-2026:89860 Nov 7, 2026
httpd · rocky 8 0:2.4.37-65.module+el8.10.0+40197+0231e209.8 RLSA-2026:92616 Nov 7, 2026
httpd · rocky 9 0:2.4.62-13.el9_8.9 RLSA-2026:88229 Nov 7, 2026
httpd-core · RHEL 9 0:2.4.62-13.el9_8.9 RHSA-2026:88229 Oct 24, 2026
httpd-core · almalinux 10 2.4.63-13.el10_2.8 ALSA-2026:89860 Nov 7, 2026
httpd-core · almalinux 9 2.4.62-13.el9_8.9 ALSA-2026:88229 Nov 7, 2026
httpd-core · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
httpd-core · ol 10 0:2.4.63-13.0.1.el10_2.8 ELSA-2026-89860 Nov 7, 2026
httpd-core · ol 9 0:2.4.62-13.0.1.el9_8.9 ELSA-2026-88229 Nov 7, 2026
httpd-core-debuginfo · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
httpd-debuginfo · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
httpd-debugsource · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
httpd-devel · RHEL 8 0:2.4.37-65.module+el8.10.0+25092+6f3ea0dd.13 RHSA-2026:92616 Oct 30, 2026
httpd-devel · RHEL 9 0:2.4.62-13.el9_8.9 RHSA-2026:88229 Oct 24, 2026
httpd-devel · almalinux 10 2.4.63-13.el10_2.8 ALSA-2026:89860 Nov 7, 2026
httpd-devel · almalinux 8 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 ALSA-2026:92616 Nov 7, 2026
httpd-devel · almalinux 9 2.4.62-13.el9_8.9 ALSA-2026:88229 Nov 7, 2026
httpd-devel · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
httpd-devel · ol 10 0:2.4.63-13.0.1.el10_2.8 ELSA-2026-89860 Nov 7, 2026
httpd-devel · ol 8 0:2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8 ELSA-2026-92616 Nov 7, 2026
httpd-devel · ol 9 0:2.4.62-13.0.1.el9_8.9 ELSA-2026-88229 Nov 7, 2026
httpd-filesystem · RHEL 8 0:2.4.37-65.module+el8.10.0+25092+6f3ea0dd.13 RHSA-2026:92616 Oct 30, 2026
httpd-filesystem · RHEL 9 0:2.4.62-13.el9_8.9 RHSA-2026:88229 Oct 24, 2026
httpd-filesystem · almalinux 10 2.4.63-13.el10_2.8 ALSA-2026:89860 Nov 7, 2026
httpd-filesystem · almalinux 8 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 ALSA-2026:92616 Nov 7, 2026
httpd-filesystem · almalinux 9 2.4.62-13.el9_8.9 ALSA-2026:88229 Nov 7, 2026
httpd-filesystem · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
httpd-filesystem · ol 10 0:2.4.63-13.0.1.el10_2.8 ELSA-2026-89860 Nov 7, 2026
httpd-filesystem · ol 8 0:2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8 ELSA-2026-92616 Nov 7, 2026
httpd-filesystem · ol 9 0:2.4.62-13.0.1.el9_8.9 ELSA-2026-88229 Nov 7, 2026
httpd-manual · RHEL 8 0:2.4.37-65.module+el8.10.0+25092+6f3ea0dd.13 RHSA-2026:92616 Oct 30, 2026
httpd-manual · RHEL 9 0:2.4.62-13.el9_8.9 RHSA-2026:88229 Oct 24, 2026
httpd-manual · almalinux 10 2.4.63-13.el10_2.8 ALSA-2026:89860 Nov 7, 2026
httpd-manual · almalinux 8 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 ALSA-2026:92616 Nov 7, 2026
httpd-manual · almalinux 9 2.4.62-13.el9_8.9 ALSA-2026:88229 Nov 7, 2026
httpd-manual · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
httpd-manual · ol 10 0:2.4.63-13.0.1.el10_2.8 ELSA-2026-89860 Nov 7, 2026
httpd-manual · ol 8 0:2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8 ELSA-2026-92616 Nov 7, 2026
httpd-manual · ol 9 0:2.4.62-13.0.1.el9_8.9 ELSA-2026-88229 Nov 7, 2026
httpd-tools · RHEL 8 0:2.4.37-65.module+el8.10.0+25092+6f3ea0dd.13 RHSA-2026:92616 Oct 30, 2026
httpd-tools · RHEL 9 0:2.4.62-13.el9_8.9 RHSA-2026:88229 Oct 24, 2026
httpd-tools · almalinux 10 2.4.63-13.el10_2.8 ALSA-2026:89860 Nov 7, 2026
httpd-tools · almalinux 8 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 ALSA-2026:92616 Nov 7, 2026
httpd-tools · almalinux 9 2.4.62-13.el9_8.9 ALSA-2026:88229 Nov 7, 2026
httpd-tools · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
httpd-tools · ol 10 0:2.4.63-13.0.1.el10_2.8 ELSA-2026-89860 Nov 7, 2026
httpd-tools · ol 8 0:2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8 ELSA-2026-92616 Nov 7, 2026
httpd-tools · ol 9 0:2.4.62-13.0.1.el9_8.9 ELSA-2026-88229 Nov 7, 2026
httpd-tools-debuginfo · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
mod_http2 · RHEL 8 0:1.15.7-10.module+el8.10.0+24521+219dcfc5.7 RHSA-2026:92616 Oct 30, 2026
mod_http2 · almalinux 8 1.15.7-10.module_el8.10.0+4233+8b7d9181.7 ALSA-2026:92616 Nov 7, 2026
mod_http2 · amzn 2023 1:2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
mod_http2 · ol 8 0:1.15.7-10.module+el8.10.0+91023+3994037c.7 ELSA-2026-92616 Nov 7, 2026
mod_http2 · rocky 8 0:1.15.7-10.module+el8.10.0+1775+6b057638 RLSA-2026:92616 Nov 7, 2026
mod_http2-debuginfo · amzn 2023 1:2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
mod_ldap · RHEL 8 0:2.4.37-65.module+el8.10.0+25092+6f3ea0dd.13 RHSA-2026:92616 Oct 30, 2026
mod_ldap · RHEL 9 0:2.4.62-13.el9_8.9 RHSA-2026:88229 Oct 24, 2026
mod_ldap · almalinux 10 2.4.63-13.el10_2.8 ALSA-2026:89860 Nov 7, 2026
mod_ldap · almalinux 8 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 ALSA-2026:92616 Nov 7, 2026
mod_ldap · almalinux 9 2.4.62-13.el9_8.9 ALSA-2026:88229 Nov 7, 2026
mod_ldap · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
mod_ldap · ol 10 0:2.4.63-13.0.1.el10_2.8 ELSA-2026-89860 Nov 7, 2026
mod_ldap · ol 8 0:2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8 ELSA-2026-92616 Nov 7, 2026
mod_ldap · ol 9 0:2.4.62-13.0.1.el9_8.9 ELSA-2026-88229 Nov 7, 2026
mod_ldap-debuginfo · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
mod_lua · RHEL 9 0:2.4.62-13.el9_8.9 RHSA-2026:88229 Oct 24, 2026
mod_lua · almalinux 10 2.4.63-13.el10_2.8 ALSA-2026:89860 Nov 7, 2026
mod_lua · almalinux 9 2.4.62-13.el9_8.9 ALSA-2026:88229 Nov 7, 2026
mod_lua · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
mod_lua · ol 10 0:2.4.63-13.0.1.el10_2.8 ELSA-2026-89860 Nov 7, 2026
mod_lua · ol 9 0:2.4.62-13.0.1.el9_8.9 ELSA-2026-88229 Nov 7, 2026
mod_lua-debuginfo · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
mod_md · RHEL 8 1:2.0.8-8.module+el8.10.0+24941+3af7c60a.4 RHSA-2026:92616 Oct 30, 2026
mod_md · almalinux 8 1:2.0.8-8.module_el8.10.0+4295+280de5aa.4 ALSA-2026:92616 Nov 7, 2026
mod_md · ol 8 1:2.0.8-8.module+el8.10.0+91092+d4ec9ae3.4 ELSA-2026-92616 Nov 7, 2026
mod_md · rocky 8 1:2.0.8-8.module+el8.10.0+40053+5a18018e.2 RLSA-2026:92616 Nov 7, 2026
mod_proxy_html · RHEL 8 1:2.4.37-65.module+el8.10.0+25092+6f3ea0dd.13 RHSA-2026:92616 Oct 30, 2026
mod_proxy_html · RHEL 9 1:2.4.62-13.el9_8.9 RHSA-2026:88229 Oct 24, 2026
mod_proxy_html · almalinux 10 1:2.4.63-13.el10_2.8 ALSA-2026:89860 Nov 7, 2026
mod_proxy_html · almalinux 8 1:2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 ALSA-2026:92616 Nov 7, 2026
mod_proxy_html · almalinux 9 1:2.4.62-13.el9_8.9 ALSA-2026:88229 Nov 7, 2026
mod_proxy_html · amzn 2023 1:2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
mod_proxy_html · ol 10 1:2.4.63-13.0.1.el10_2.8 ELSA-2026-89860 Nov 7, 2026
mod_proxy_html · ol 8 1:2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8 ELSA-2026-92616 Nov 7, 2026
mod_proxy_html · ol 9 1:2.4.62-13.0.1.el9_8.9 ELSA-2026-88229 Nov 7, 2026
mod_proxy_html-debuginfo · amzn 2023 1:2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
mod_session · RHEL 8 0:2.4.37-65.module+el8.10.0+25092+6f3ea0dd.13 RHSA-2026:92616 Oct 30, 2026
mod_session · RHEL 9 0:2.4.62-13.el9_8.9 RHSA-2026:88229 Oct 24, 2026
mod_session · almalinux 10 2.4.63-13.el10_2.8 ALSA-2026:89860 Nov 7, 2026
mod_session · almalinux 8 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 ALSA-2026:92616 Nov 7, 2026
mod_session · almalinux 9 2.4.62-13.el9_8.9 ALSA-2026:88229 Nov 7, 2026
mod_session · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
mod_session · ol 10 0:2.4.63-13.0.1.el10_2.8 ELSA-2026-89860 Nov 7, 2026
mod_session · ol 8 0:2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8 ELSA-2026-92616 Nov 7, 2026
mod_session · ol 9 0:2.4.62-13.0.1.el9_8.9 ELSA-2026-88229 Nov 7, 2026
mod_session-debuginfo · amzn 2023 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
mod_ssl · RHEL 8 1:2.4.37-65.module+el8.10.0+25092+6f3ea0dd.13 RHSA-2026:92616 Oct 30, 2026
mod_ssl · RHEL 9 1:2.4.62-13.el9_8.9 RHSA-2026:88229 Oct 24, 2026
mod_ssl · almalinux 10 1:2.4.63-13.el10_2.8 ALSA-2026:89860 Nov 7, 2026
mod_ssl · almalinux 8 1:2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 ALSA-2026:92616 Nov 7, 2026
mod_ssl · almalinux 9 1:2.4.62-13.el9_8.9 ALSA-2026:88229 Nov 7, 2026
mod_ssl · amzn 2023 1:2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026
mod_ssl · ol 10 1:2.4.63-13.0.1.el10_2.8 ELSA-2026-89860 Nov 7, 2026
mod_ssl · ol 8 1:2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8 ELSA-2026-92616 Nov 7, 2026
mod_ssl · ol 9 1:2.4.62-13.0.1.el9_8.9 ELSA-2026-88229 Nov 7, 2026
mod_ssl-debuginfo · amzn 2023 1:2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202 Nov 7, 2026

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