A notice published on October 1, 2026 describes a low-severity flaw that can cause denial of service. It affects Apache HTTP Server versions 2.4.0 through 2.4.68; the stated fix is version 2.4.69.
The notice for CVE-2026-63686 reports a null pointer dereference in the Apache HTTP Server mod_xml2enc module. According to the text, a forwarded response from an untrusted backend server can cause denial of service when character-set conversion partly succeeds and then fails. The flaw affects all platforms and versions 2.4.0 through 2.4.68; its severity is rated low.
The text is an automatic translation of an oss-sec post attributed to Eric Covener and dated October 1, 2026. It recommends upgrading to version 2.4.69. To confirm the details and fix, consult the original post in the oss-sec archive and check the Apache advisory and release notes. If you use AI to study the configuration or impact, do not submit credentials, personal data, or internal configurations without applying your organization’s data-protection policy.