high7.5
CVE-2026-34355
A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Apache | Http Server | from 2.4.0 before 2.4.68 |
Weakness classification
References
- NVD record
- CVE.org record
- https://httpd.apache.org/security/vulnerabilities_24.html
- http://www.openwall.com/lists/oss-security/2026/06/08/6
- https://access.redhat.com/errata/RHSA-2026:25042
- https://access.redhat.com/errata/RHSA-2026:34109
- https://access.redhat.com/errata/RHSA-2026:41906
- https://access.redhat.com/errata/RHSA-2026:42828
- https://access.redhat.com/errata/RHSA-2026:47046
- https://access.redhat.com/errata/RHSA-2026:53371
- https://access.redhat.com/errata/RHSA-2026:56868
- https://access.redhat.com/errata/RHSA-2026:56869
- https://access.redhat.com/errata/RHSA-2026:62165
- https://access.redhat.com/errata/RHSA-2026:66323
- https://access.redhat.com/errata/RHSA-2026:67152
- https://access.redhat.com/security/cve/CVE-2026-34355
- https://bugzilla.redhat.com/show_bug.cgi?id=2486414
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34355.json