CVE-2026-34355 Details
Description
A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend. Users are recommended to upgrade to version 2.4.68, which fixes this issue.
A buffer overflow vulnerability has been identified in the mod_proxy_html module of Apache HTTP Server. This issue affects versions 2.4.67 and earlier, allowing an untrusted backend to execute an attack. The vulnerability can be exploited by sending crafted responses that manipulate memory, potentially leading to arbitrary code execution or causing the server to crash.
Users are advised to upgrade to Apache HTTP Server version 2.4.68, 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 Jun 8, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | redhat-SADP |
| CWE-122 | Heap-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| apache http server | >= 2.4.0, < 2.4.68 |
CPE
Remediation
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Change History
21 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 14, 2026 | CVE Modified | redhat-SADP |
| Sep 10, 2026 | CVE Modified | redhat-SADP |
| Sep 2, 2026 | CVE Modified | redhat-SADP |
| Aug 27, 2026 | CVE Modified | CVE |
| Aug 27, 2026 | CVE Modified | [email protected] |
| Aug 27, 2026 | CVE Modified | redhat-SADP |
| Aug 11, 2026 | CVE Modified | redhat-SADP |
| Jul 28, 2026 | CVE Modified | redhat-SADP |
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jul 22, 2026 | CVE Modified | redhat-SADP |
| Jul 20, 2026 | CVE Modified | redhat-SADP |
| Jul 16, 2026 | CVE Modified | redhat-SADP |
| Jul 15, 2026 | CVE Modified | redhat-SADP |
| Jul 2, 2026 | CVE Modified | redhat-SADP |
| Jun 30, 2026 | CVE Modified | redhat-SADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 9, 2026 | Initial Analysis | [email protected] |
| Jun 8, 2026 | CVE Modified | CVE |
| Jun 8, 2026 | CVE Modified | CISA-ADP |
| Jun 8, 2026 | New CVE Received | [email protected] |