CVE-2026-103552: How a Deeply Nested LDAP Filter Overflows the Apache Directory LDAP API Stack
CVE-2026-103552: A Stack-Based Buffer Overflow in the Apache Directory LDAP API Vulnerability overview The Apache Software Foundation published a batch of fixes on 2 October 2026 covering several projects, and one of them touches the Java library that many directory-driven applications quietly depend on. Tracked as CVE-2026-103552, the issue sits in the Apache Directory LDAP API and is rated 7.3 on the CVSS v3 scale. Apache classifies it as CWE-121, a stack-based buffer overflow, and shipped the
🎯 Vulnerability: Remote Code Execution (RCE)
💡 Defense Fix: Avoid executing shell commands via system(). Use parameterized APIs and strict input sanitization.