CVE-2026-43951

Source
https://cve.org/CVERecord?id=CVE-2026-43951
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43951.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-43951
Aliases
Downstream
ALPINE (1)
ALSA (5)
AZL (2)
BELL (1)
DEBIAN (1)
MGASA (1)
MINI (1)
OESA (4)
openSUSE (1)
RHSA (14)
RLSA (4)
ROOT (1)
SUSE (5)
UBUNTU (1)
Related
Published
2026-06-08T15:16:14Z
Modified
2026-10-29T11:42:06Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
Apache HTTP Server: OOB Read in `merge_response_headers` can cause crash
Details

Out-of-bounds Read vulnerability in Apache HTTP Server with mod_headers and mod_mime and multiple response languages.

This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

Database specific
{
    "cna_assigner": "apache",
    "cwe_ids": [
        "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43951.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "2.4.0"
                        },
                        {
                            "last_affected": "2.4.67"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/apache/httpd

Affected ranges

Type
GIT
Repo
https://github.com/apache/httpd
Events
Database specific
Show details
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "2.4.0"
                },
                {
                    "last_affected": "2.4.67"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

Database specific

source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43951.json"