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Fencer Vulns
high 7.5

CVE-2026-56449 json

Apache HTTP Server: mod_proxy_html: crash in dump_content

published 2026-10-01 38 d ago modified 2026-10-22 17 d ago also BIT-apache-2026-56449 , EUVD-2026-90895

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

Out-of-bounds Write vulnerability in Apache HTTP Server's mod_proxy_html with crafted HTTP response bodies.

This issue affects Apache HTTP Server version 2.4.68.

Patch / fix

  • bitnami apache 2.4.69
  • apache http_server 2.4.69
  • apache2 Debian 13 2.4.69-1~deb13u1
  • apache2 Debian 14 2.4.69-1

debian advisories DEBIAN-CVE-2026-56449

  • httpd RHEL 10.2 2.4.63-13.el10_2.5
  • mod_lua RHEL 10.2 2.4.63-13.el10_2.5
  • mod_ssl RHEL 10.2 1:2.4.63-13.el10_2.5
  • mod_ldap RHEL 10.2 2.4.63-13.el10_2.5
  • httpd-core RHEL 10.2 2.4.63-13.el10_2.5
  • httpd-tools RHEL 10.2 2.4.63-13.el10_2.5
  • mod_session RHEL 10.2 2.4.63-13.el10_2.5
  • httpd-manual RHEL 10.2 2.4.63-13.el10_2.5

red hat advisories RHBA-2026:50158RHSA-2026:74858

  • apache2 Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 2.4.69-r0

alpine advisories ALPINE-CVE-2026-56449

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • httpd Azure Linux 3.0 2.4.69-1

azure linux advisories AZL-106794

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-56449 updated cvss 3.7

httpd: httpd: Denial of Service via crafted HTTP response bodies in mod_proxy_html

  • Red Hat Enterprise Linux 7 httpd, mod_ssl, mod_ldap, httpd-tools, mod_session, httpd-manual, +1 more Red Hat JBoss Core Services jbcs-httpd24-httpd, jbcs-httpd24-mod_md, jbcs-httpd24-mod_ssl, jbcs-httpd24-mod_ldap, jbcs-httpd24-httpd-zip, jbcs-httpd24-httpd-libs, +6 more
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux AppStream (v. 10) httpd 2.4.63-13.el10_2.5, mod_lua 2.4.63-13.el10_2.5, mod_ssl 2.4.63-13.el10_2.5, mod_ldap 2.4.63-13.el10_2.5, httpd-core 2.4.63-13.el10_2.5, httpd-tools 2.4.63-13.el10_2.5, +4 more
    fixed: vendor fix RHBA-2026:50158
  • Red Hat Hardened Images httpd 2.4.69-1.hum1, mod_lua 2.4.69-1.hum1, mod_ssl 2.4.69-1.hum1, mod_ldap 2.4.69-1.hum1, httpd-core 2.4.69-1.hum1, httpd-tools 2.4.69-1.hum1, +4 more
    fixed: vendor fix RHSA-2026:74858
  • Red Hat Enterprise Linux 6 httpd, mod_ssl, httpd-tools, httpd-manual Red Hat Enterprise Linux 8 httpd, mod_md, mod_ssl, mod_ldap, mod_http2, httpd-tools, +4 more Red Hat Enterprise Linux 9 httpd, mod_lua, mod_ssl, mod_ldap, httpd-core, httpd-tools, +4 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
38 d ago

Exploit prediction

0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
bitnami apache
>=2.4.0, <2.4.69
2.4.69

Affected products

  • Apache Software Foundation Apache HTTP Server

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.