Improper Null Termination, Out-of-bounds Read vulnerability in Apache HTTP Server.
This issue affects Apache HTTP Server: through 2.4.66.
Users are recommended to upgrade to version 2.4.67, which fixes the issue.
Score 5.3 from GitHub Security Advisory published 2026-05-04. NVD baseline CVSS 5.3; sources differ by 0.0.
A fix is available — apply it.
Improper Null Termination, Out-of-bounds Read vulnerability in Apache HTTP Server.
This issue affects Apache HTTP Server: through 2.4.66.
Users are recommended to upgrade to version 2.4.67, which fixes the issue.
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
May 4, 2026
May 4, 2026
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Red Hat Security Advisory: httpd security update
Red Hat Security Advisory: httpd security update
Red Hat Security Advisory: httpd security update
Red Hat Security Advisory: httpd security update
Red Hat Security Advisory: httpd:2.4 security update
Red Hat Security Advisory: httpd:2.4 security update
Red Hat Security Advisory: httpd:2.4 security update
Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.62 SP4 security update
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | apache2-utils (2.4.66-2ubuntu2.1) @ resolute | 2026-08-23 | ubuntu |
| ubuntu | apache2-utils (2.4.18-2ubuntu3.17+esm19) @ xenial | 2026-08-23 | ubuntu |
| redhat | httpd-0:2.4.63-1.el10_0.4 | 2026-07-28 | redhat |
| redhat | httpd:2.4-8060020260702195216.ad008a3a | 2026-07-08 | redhat |
| redhat | httpd:2.4-8040020260702193120.522a0ee4 | 2026-07-08 | redhat |
| redhat | httpd:2.4-8080020260702200145.63b34585 | 2026-07-07 | redhat |
| redhat | mod_proxy_ajp.so | 2026-06-22 | redhat |
| redhat | jbcs-httpd24-httpd-0:2.4.62-13.el7jbcs | 2026-06-22 | redhat |
| redhat | httpd:2.4-8100020260519200905.489197e6 | 2026-06-01 | redhat |
| redhat | httpd-0:2.4.63-13.el10_2.1 | 2026-05-27 | redhat |
| redhat | httpd-0:2.4.62-13.el9_8.1 | 2026-05-27 | redhat |
| redhat | httpd-main-2.4.67-0.1.hum1 | 2026-05-06 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| apache2 | — |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| apache2 | — |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| apache2 | — |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| apache2 | — |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| apache2 | — |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| apache2 | 2.4.48-3.1 ... 2.4.66-8 (82 versions) |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| apache2 | 2.4.57-2 ... 2.4.67-1~deb12u1 (46 versions) |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| apache2 | 2.4.65-2 ... 2.4.67-1~deb13u1 (22 versions) |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| apache2 | 2.4.65-2 ... 2.4.67-1~deb13u3 (24 versions) |
| — |
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 236 total refreshes for this CVE.
Alpine:v3.20:apache2
redhat:RHSA-2026:13938 · redhat:RHSA-2026:21391 · redhat:RHSA-2026:27200
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-34032
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.