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High 7.5Published Jun 8, 2026
CVE-2026-34355Apache HTTP Server: mod_proxy_html buffer overflow
Updated under an hour ago ()
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It affects Apache Software Foundation Apache HTTP Server and 8 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-122, CWE-120
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- apache
- NVD analysis
- Modified
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Apache Software Foundation Apache HTTP Server apache_software_foundation:apache_http_server (from the name) | from 2.4.0 through 2.4.67 | CNA record |
Red Hat JBoss Core Services for RHEL 8 redhat:jboss_core_services | from 0:2.4.62-16.el8jbcs not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:2.4.63-13.el10_2.4 not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus | from 0:2.4.63-1.el10_0.4 not affected | CISA ADP |
from 0:2.4.57-11.el9_4.5 not affected | CISA ADP | |
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support redhat:rhel_eus | from 0:2.4.62-4.el9_6.6 not affected | CISA ADP |
Red Hat Red Hat Hardened Images redhat:hummingbird | from 2.4.68-1.hum1 not affected | CISA ADP |
Red Hat Red Hat Insights proxy 1.5 redhat:insights_proxy | from 1786433656 not affected | CISA ADP |
apache http_server apache:http_server | from 2.4.0 before 2.4.68 | NVD |
References
- https://httpd.apache.org/security/vulnerabilities_24.htmlvendor-advisory
- http://www.openwall.com/lists/oss-security/2026/06/08/6mailing-list
- 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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.