CVE-2012-2138: Apache Org.apache.sling.servlets.post

Medium severity, CVSS 5.0. EPSS: 14.1% chance of exploitation in the next 30 days.

The @CopyFrom operation in the POST servlet in the org.apache.sling.servlets.post bundle before 2.1.2 in Apache Sling does not prevent attempts to copy an ancestor node to a descendant node, which allows remote attackers to cause a denial of service (infinite loop) via a crafted HTTP request.

Affected products

• Apache Org.apache.sling.servlets.post: up to and including 2.1.0

Published 2012-07-09. Last modified 2026-06-16.