Not rated
CVE-2026-103863 Apache Sling Engine: Include-protection mitigations bypassable via uncovered response-wrapper paths
Description
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling Engine. Content-Type, charset, and redirect changes from an included component evade the protectheaders / checkcontenttype enforcement through setHeader(), repeated calls to setContentType(), the charset APIs, Servlet 6.1 redirect overloads, and stale config - enabling stored XSS despite enabled protections. This issue affects Apache Sling Engine before 3.0.4. Users are recommended to upgrade to version 3.0.4, which fixes the issue.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Apache Sling Engine 3.0 | earliest → < 3.0.4 | 3.0.4 |
References
- lists.apache.org lists.apache.org
Timeline
- Published
- Last modified
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