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Date: Wed, 19 Sep 2018 08:44:41 -0400
From: Tim Allison <>
	Apache Security Team <>,
Subject: [CVE-2018-11761] Apache Tika DoS XML Entity Expansion Vulnerability

CVE-2018-11761: Apache Tika Denial of Service via XML Entity Expansion

Severity: Medium

The Apache Software Foundation

Versions Affected:
Apache Tika 0.1 to 1.18

Apache Tika's XML parsers were not configured to limit entity expansion.
They were therefore vulnerable to an entity expansion vulnerability which
can lead to a denial of service attack.

Apache Tika users should upgrade to 1.19 or later

This issue was discovered by Renfei (Brian) Wang of Amazon.

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