CVE-2026-42536
EUVD-2026-3510008.06.2026, 16:16
Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and untrusted content This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue.
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| apache | http_server | 2.4.0 ≤ 𝑥 < 2.4.68 |
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| Red Hat | JBoss Core Services for RHEL 8 | 0:2.4.62-16.el8jbcs ≤ 𝑥 < * | ADP |
| Red Hat | JBoss Core Services for RHEL 8 | 0:2.0.29-13.el8jbcs ≤ 𝑥 < * | ADP |
| Red Hat | JBoss Core Services for RHEL 8 | 0:1.2.50-17.redhat_1.el8jbcs ≤ 𝑥 < * | ADP |
| Red Hat | JBoss Core Services for RHEL 8 | 1:2.4.28-19.el8jbcs ≤ 𝑥 < * | ADP |
| Red Hat | JBoss Core Services for RHEL 8 | 0:1.3.22-12.el8jbcs ≤ 𝑥 < * | ADP |
| Red Hat | JBoss Core Services for RHEL 8 | 0:2.9.6-19.el8jbcs ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 10 | 0:2.4.63-13.el10_2.4 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | 0:2.4.63-1.el10_0.4 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 8 | 8100020260714175253.489197e6 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 9 | 0:2.4.62-13.el9_8.5 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | 0:2.4.62-4.el9_6.6 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat JBoss Core Services 2.4.62.SP5 | httpd24-httpd ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Hardened Images | 2.4.68-1.hum1 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Insights proxy 1.5 | 1786433656 ≤ 𝑥 < * | ADP |
Debian Releases
Ubuntu Releases
Ubuntu Product | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| apache2 |
|
openSUSE / SLES Releases
openSUSE Product | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| apache2 |
| ||||||||||||||||||||||||
| apache2-devel |
| ||||||||||||||||||||||||
| apache2-doc |
| ||||||||||||||||||||||||
| apache2-example-pages |
| ||||||||||||||||||||||||
| apache2-manual |
| ||||||||||||||||||||||||
| apache2-prefork |
| ||||||||||||||||||||||||
| apache2-tls13 |
| ||||||||||||||||||||||||
| apache2-tls13-devel |
| ||||||||||||||||||||||||
| apache2-tls13-doc |
| ||||||||||||||||||||||||
| apache2-tls13-example-pages |
| ||||||||||||||||||||||||
| apache2-tls13-prefork |
| ||||||||||||||||||||||||
| apache2-tls13-utils |
| ||||||||||||||||||||||||
| apache2-tls13-worker |
| ||||||||||||||||||||||||
| apache2-utils |
| ||||||||||||||||||||||||
| apache2-worker |
|
Red Hat Enterprise Linux Releases
Red Hat Product | |||
|---|---|---|---|
| httpd |
| ||
| httpd-core |
| ||
| httpd-devel |
| ||
| httpd-filesystem |
| ||
| httpd-manual |
| ||
| httpd-tools |
| ||
| mod |
|
Amazon Linux Releases
Amazon Package | |||||
|---|---|---|---|---|---|
| httpd |
| ||||
| httpd-core |
| ||||
| httpd-core-debuginfo |
| ||||
| httpd-debuginfo |
| ||||
| httpd-debugsource |
| ||||
| httpd-devel |
| ||||
| httpd-filesystem |
| ||||
| httpd-manual |
| ||||
| httpd-tools |
| ||||
| httpd-tools-debuginfo |
| ||||
| mod_ldap |
| ||||
| mod_ldap-debuginfo |
| ||||
| mod_lua |
| ||||
| mod_lua-debuginfo |
| ||||
| mod_md |
| ||||
| mod_proxy_html |
| ||||
| mod_proxy_html-debuginfo |
| ||||
| mod_session |
| ||||
| mod_session-debuginfo |
| ||||
| mod_ssl |
| ||||
| mod_ssl-debuginfo |
|
Common Weakness Enumeration
- CWE-122 - Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.
References