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OpenAdvisories
High · 7.5 CVE-2026-56153 EUVD-2026-90893GHSA-9wcj-rggf-vf26

Apache HTTP Server: mod_charset_lite: Heap overflow in finish_partial_char

Published Oct 1, 2026 · Updated Oct 1, 2026 · Assigned by apache

Description

Out-of-bounds Write vulnerability in Apache HTTP Server's mod_charset_lite.

This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

Affected products

VendorProductAffectedFixed
Apache Software Foundation Apache HTTP Server 2.4.0 – ≤ 2.4.68 —

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.

ReleasePackageFixed inAdvisory
Debian 14 apache2 2.4.69-1 —
Debian 13 apache2 2.4.69-1~deb13u1 —
Debian 12 apache2 2.4.71-1~deb12u1 —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 apache2 2.4.68-1ubuntu6.1 USN-9016-1
Ubuntu 26.04 LTS apache2 2.4.66-2ubuntu2.7 USN-9016-1
Ubuntu 24.04 LTS apache2 2.4.58-1ubuntu8.18 USN-9016-1
Ubuntu 22.04 LTS apache2 2.4.52-1ubuntu4.26 USN-9016-1
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 20.04 LTS apache2 2.4.41-4ubuntu3.23+esm10 USN-9016-1
Ubuntu Pro 18.04 LTS apache2 2.4.29-1ubuntu4.27+esm14 USN-9016-1
Ubuntu Pro 16.04 LTS apache2 2.4.18-2ubuntu3.17+esm23 USN-9016-1
Ubuntu Pro 14.04 LTS apache2 2.4.7-1ubuntu4.22+esm18 USN-9016-1
ReleasePackageFixed inAdvisory
Red Hat Hardened Images 1 httpd +10 2.4.69-1.hum1 RHSA-2026:74858

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 10 httpd +8 2.4.63-13.el10_2.8 ALSA-2026:89860
AlmaLinux 10 mod_ssl +1 1:2.4.63-13.el10_2.8 ALSA-2026:89860
AlmaLinux 9 httpd +8 2.4.62-13.el9_8.9 ALSA-2026:88229
AlmaLinux 9 mod_ssl +1 1:2.4.62-13.el9_8.9 ALSA-2026:88229
AlmaLinux 8 httpd +6 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 ALSA-2026:92616
AlmaLinux 8 mod_http2 1.15.7-10.module_el8.10.0+4233+8b7d9181.7 ALSA-2026:92616
AlmaLinux 8 mod_md 1:2.0.8-8.module_el8.10.0+4295+280de5aa.4 ALSA-2026:92616
AlmaLinux 8 mod_ssl +1 1:2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 ALSA-2026:92616

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 10 httpd 2.4.63-13.el10_2.8 RLSA-2026:89860
Rocky Linux 9 httpd 2.4.62-13.el9_8.9 RLSA-2026:88229
Rocky Linux 8 httpd 2.4.37-65.module+el8.10.0+1830+22f0c9e0 RLSA-2026:92616
Rocky Linux 8 mod_http2 1.15.7-10.module+el8.10.0+1775+6b057638 RLSA-2026:92616
Rocky Linux 8 mod_md 1:2.0.8-8.module+el8.9.0+1370+89cc8ad5 RLSA-2026:92616
ReleasePackageFixed inAdvisory
SLES 15 SP7 apache2 +6 2.4.66-150700.4.26.1 SUSE-SU-2026:5077-1
SLES 15 SP6 apache2 +5 2.4.66-150600.5.58.1 SUSE-SU-2026:5075-1
SLES 15 SP5 apache2 2.4.66-150400.6.60.1 SUSE-SU-2026:5076-1
SLES 15 SP4 apache2 2.4.66-150400.6.60.1 SUSE-SU-2026:5076-1
SLES 12 SP5 apache2 +1 2.4.66-35.84.1 SUSE-SU-2026:5099-1
Show 5 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP6 apache2 +5 2.4.66-150600.5.58.1 SUSE-SU-2026:5075-1
SLES for SAP 15 SP5 apache2 2.4.66-150400.6.60.1 SUSE-SU-2026:5076-1
SLES for SAP 15 SP4 apache2 2.4.66-150400.6.60.1 SUSE-SU-2026:5076-1
SLE HPC 15 SP5 apache2 2.4.66-150400.6.60.1 SUSE-SU-2026:5076-1
SLE HPC 15 SP4 apache2 2.4.66-150400.6.60.1 SUSE-SU-2026:5076-1
ReleasePackageFixed inAdvisory
Alpine v3.24 apache2 2.4.69-r0 —
Alpine v3.23 apache2 2.4.69-r0 —
Alpine v3.22 apache2 2.4.69-r0 —
Alpine v3.21 apache2 2.4.69-r0 —

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 httpd +8 2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202
Amazon Linux 2023 mod_ssl +2 1:2.4.69-1.amzn2023.0.2 ALAS2023-2026-3202
Amazon Linux 2 httpd +7 2.4.69-1.amzn2.0.3 ALAS2-2026-3990
Amazon Linux 2 mod_ssl +2 1:2.4.69-1.amzn2.0.3 ALAS2-2026-3990

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 httpd 2.4.69-1 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 10 httpd +8 2.4.63-13.0.1.el10_2.8 ELSA-2026-89860
Oracle Linux 10 mod_ssl +1 1:2.4.63-13.0.1.el10_2.8 ELSA-2026-89860
Oracle Linux 9 httpd +8 2.4.62-13.0.1.el9_8.9 ELSA-2026-88229
Oracle Linux 9 mod_ssl +1 1:2.4.62-13.0.1.el9_8.9 ELSA-2026-88229
Oracle Linux 8 httpd +6 2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8 ELSA-2026-92616
Oracle Linux 8 mod_http2 1.15.7-10.module+el8.10.0+91023+3994037c.7 ELSA-2026-92616
Oracle Linux 8 mod_md 1:2.0.8-8.module+el8.10.0+91092+d4ec9ae3.4 ELSA-2026-92616
Oracle Linux 8 mod_ssl +1 1:2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8 ELSA-2026-92616

Advisories 18

References