Is CVE-2026-63686 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-63686?

CVE-2026-63686 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-63686

Description

A NULL pointer dereference in mod_xml2enc in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an untrusted backend server to cause a denial of service via a proxied response with a charset whose conversion partially succeeds then fails. Users are recommended to upgrade to version 2.4.69, which fixes this issue.