CVE-1999-1547: Oracle Web Listener

High severity, CVSS 7.5. EPSS: 9.7% chance of exploitation in the next 30 days.

Oracle Web Listener 2.1 allows remote attackers to bypass access restrictions by replacing a character in the URL with its HTTP-encoded (hex) equivalent.

Affected products

• Oracle Web Listener: version 2.1 only

Published 1999-11-25. Last modified 2026-06-16.