Vulnerability · Published Oct 1, 2026 · Assigned by apache
CVE-2026-56449Apache HTTP Server: mod_proxy_html: crash in dump_content
High 7.5
In plain English
A high-severity out-of-bounds write in Apache HTTP Server from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 52.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.21 | apache2 | 2.4.69-r0 | ALPINE-CVE-2026-56449 |
| Alpine:v3.22 | apache2 | 2.4.69-r0 | ALPINE-CVE-2026-56449 |
| Alpine:v3.23 | apache2 | 2.4.69-r0 | ALPINE-CVE-2026-56449 |
| Alpine:v3.24 | apache2 | 2.4.69-r0 | ALPINE-CVE-2026-56449 |
| Debian:12 | apache2 | no fix listed | DEBIAN-CVE-2026-56449 |
| Debian:13 | apache2 | 2.4.69-1~deb13u1 | DEBIAN-CVE-2026-56449 |
| Debian:14 | apache2 | 2.4.69-1 | DEBIAN-CVE-2026-56449 |
| Ubuntu:22.04:LTS | apache2 | no fix listed | UBUNTU-CVE-2026-56449 |
| Ubuntu:24.04:LTS | apache2 | no fix listed | UBUNTU-CVE-2026-56449 |
| Ubuntu:26.04:LTS | apache2 | no fix listed | UBUNTU-CVE-2026-56449 |
| Ubuntu:26.10 | apache2 | no fix listed | UBUNTU-CVE-2026-56449 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache HTTP Server | 2.4.68 |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N