CVE-2026-34355
Apache HTTP Server: mod_proxy_html buffer overflow
- State
- Published
- Severity
- 7.5 High
- Published
- Jun 8, 2026
- Updated
- Sep 14, 2026
- Reserved
- Mar 27, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Apache HTTP ServerApache Software Foundation |
|
References
- https://httpd.apache.org/security/vulnerabilities_24.htmlvendor-advisory
- http://www.openwall.com/lists/oss-security/2026/06/08/6
- https://access.redhat.com/security/cve/CVE-2026-34355vdb-entry
- RHBZ#2486414issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34355.json
- https://access.redhat.com/errata/RHSA-2026:56868vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:47046vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:34109vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:42828vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:67152vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:66323vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:62165vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:41906vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:25042vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:53371vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:56869vendor-advisory
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