CVE-2026-43951 — Apache HTTP Server: OOB Read in `merge_response_headers` can cause crash

CVE-2026-43951

Apache HTTP Server: OOB Read in `merge_response_headers` can cause crash PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache HTTP Server	affected 2.4.0 through 2.4.67

CWE

CWE-125

References

https://httpd.apache.org/security/vulnerabilities_24.html

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.

http://www.openwall.com/lists/oss-security/2026/06/08/10