Improper Output Neutralization in Apache Sling Engine by Apache
CVE-2026-103864

Currently unrated

Key Information:

Vendor: Apache
Status: Apache Sling Engine
Vendor: CVE Published:; 5 November 2026

What is CVE-2026-103864?

A significant security vulnerability in Apache Sling Engine allows for improper output neutralization in logs, potentially enabling attackers to exploit the system through crafted log entries. Affected versions prior to 3.0.4 require users to upgrade to this version or later to mitigate the risk. Administrators should ensure that their environments are running the latest version to maintain security and integrity.

Affected Version(s)

Apache Sling Engine 0 < 3.0.4

References

https://lists.apache.org/thread.html/bchcm9xhz5zdqwykrdo4...

vendor-advisory

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Nov 5, 2026
Vulnerability Reserved
Oct 1, 2026

Credit

The Apache Software Foundation

Claude Code

CVE-2026-103864 Data

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