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Message-ID: <8e2efbca-350b-6a26-023b-28aec38f2e12@apache.org>
Date: Thu, 05 Nov 2026 12:23:34 +0000
From: Joerg Hoh <joerghoh@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-103866: Apache Sling Engine: Hand-rolled parameter parser
diverges from RFC/container parsing, enabling smuggling
Severity: low
Affected versions:
- Apache Sling Engine before 3.0.4
Description:
Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Apache Sling Engine. The engine's query/form parser accepts non-standard percent-escapes, wrong charsets, and continues request processing on such errors.
This issue affects Apache Sling Engine: before 3.0.4.
Users are recommended to upgrade to version 3.0.4, which fixes the issue.
This issue is being tracked as SLING-13362 SLING-13364 SLING-13365
Credit:
The Apache Software Foundation (finder)
Claude Code (tool)
References:
https://sling.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-103866
https://issues.apache.org/jira/browse/SLING-13362
https://issues.apache.org/jira/browse/SLING-13364
https://issues.apache.org/jira/browse/SLING-13365
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