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Description

Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol. This issue affects Apache HTTP Server: 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.

PUBLISHED Reserved 2026-01-19 | Published 2026-05-04 | Updated 2026-05-05 | Assigner apache

Problem types

CWE-415 Double Free

Product status

Default status
unaffected

2.4.66 (semver)
affected

Timeline

2025-12-10:reported in PR 69899
2025-12-11:fixed in r1930444, r1930796

Credits

Bartlomiej Dmitruk, striga.ai finder

Stanislaw Strzalkowski, isec.pl finder

References

www.openwall.com/lists/oss-security/2026/05/04/19

httpd.apache.org/security/vulnerabilities_24.html vendor-advisory

cve.org (CVE-2026-23918)

nvd.nist.gov (CVE-2026-23918)

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