CVE-2003-1054: Mod Access Referer

Medium severity, CVSS 5.0. EPSS: 7.1% chance of exploitation in the next 30 days.

mod_access_referer 1.0.2 allows remote attackers to cause a denial of service (crash) via a malformed Referer header that is missing a hostname, as parsed by the ap_parse_uri_components function in Apache, which triggers a null dereference.

Affected products

• Mod Access Referer Mod Access Referer: version 1.0.2 only

Published 2003-04-16. Last modified 2026-06-16.