Buffer Over-read vulnerability in Apache HTTP Server via outbound OCSP requests to an attacker controlled OCSP server
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
Users are recommended to upgrade to version 2.4.68, which fixes the issue.
Weakness
The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Http_server | Apache | 2.4.0 (including) | 2.4.68 (excluding) |
| Red Hat Enterprise Linux 10 | RedHat | httpd-0:2.4.63-13.el10_2.4 | * |
| Red Hat Enterprise Linux 10.0 Extended Update Support | RedHat | httpd-0:2.4.63-1.el10_0.4 | * |
| Red Hat Enterprise Linux 8 | RedHat | httpd:2.4-8100020260714175253.489197e6 | * |
| Red Hat Enterprise Linux 9 | RedHat | httpd-0:2.4.62-13.el9_8.5 | * |
| Red Hat Hardened Images | RedHat | httpd-main-2.4.68-1.hum1 | * |
| Apache2 | Ubuntu | devel | * |
| Apache2 | Ubuntu | esm-infra-legacy/trusty | * |
| Apache2 | Ubuntu | esm-infra-legacy/xenial | * |
| Apache2 | Ubuntu | esm-infra/bionic | * |
| Apache2 | Ubuntu | esm-infra/focal | * |
| Apache2 | Ubuntu | jammy | * |
| Apache2 | Ubuntu | noble | * |
| Apache2 | Ubuntu | questing | * |
| Apache2 | Ubuntu | resolute | * |
| Apache2 | Ubuntu | upstream | * |
References
- https://httpd.apache.org/security/vulnerabilities_24.html
- http://www.openwall.com/lists/oss-security/2026/06/08/12
- 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/security/cve/CVE-2026-44185
- https://bugzilla.redhat.com/show_bug.cgi?id=2486397
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44185.json