CVE-2026-34059 Details
Description
Buffer Over-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.
A buffer over-read vulnerability has been identified in the Apache HTTP Server's AJP (Apache JServ Protocol) module, specifically in versions through 2.4.66. This vulnerability allows for out-of-bounds reads, which can potentially lead to memory disclosure. The issue arises in the 'mod_proxy_ajp' module when it interacts with a malicious AJP server that sends crafted AJP messages, causing the server to read beyond the allocated buffer.
Users are advised to upgrade to Apache HTTP Server version 2.4.67, which addresses this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/05/04/17 | CVE | Mailing ListThird Party Advisory |
| https://httpd.apache.org/security/vulnerabilities_24.html | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-126 | Buffer Over-read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| apache http server | < 2.4.67 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 4, 2026 | Initial Analysis | [email protected] |
| May 4, 2026 | CVE Modified | CVE |
| May 4, 2026 | CVE Modified | CISA-ADP |
| May 4, 2026 | New CVE Received | [email protected] |