CVE-2026-82376
Received Received - Intake

XML External Entity Injection in Apache Roller

Publication date: 2026-09-28

Last updated on: 2026-09-28

Assigner: Apache Software Foundation

Description
Improper Restriction of XML External Entity Reference in Apache Roller 6.1.5 allows a user with entry-editing rights on a weblog to cause the server to parse an attacker-influenced trackback response with an XML parser that does not disable external entity resolution, leading to disclosure of files readable by the Roller process. The Trackback control is hidden in the standard UI, but its action remains directly reachable, and no non-default server configuration is required. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which removes the outbound trackback response parser.

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Meta Information

Published
2026-09-28
Last Modified
2026-09-28
Generated
2026-09-28
AI Q&A
2026-09-28
EPSS Evaluated
N/A
NVD
CVE-2026-82376
EUVD
EUVD-2026-88135

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
apache roller 6.1.5
apache roller From 6.1.6 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-611 The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

Attack-Flow Graph

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Executive Summary

This vulnerability is an XML External Entity (XXE) flaw in Apache Roller 6.1.5. It allows a user with entry-editing rights to manipulate a trackback response parsed by the server's XML parser. The parser does not disable external entity resolution, enabling attackers to read files accessible to the Roller process.

Detection Guidance

Check Apache Roller version with commands like 'grep -r "Apache Roller" /path/to/installation' or inspect HTTP responses for trackback endpoints. Monitor server logs for unusual XML parsing errors or file access patterns.

Impact Analysis

An attacker could exploit this to access sensitive files on the server running Apache Roller. This may lead to unauthorized data disclosure, including configuration files or other protected resources. The impact depends on the server's file permissions and the attacker's goals.

Compliance Impact

This vulnerability could violate compliance requirements like GDPR or HIPAA by enabling unauthorized access to sensitive data. GDPR requires protecting personal data, while HIPAA mandates safeguarding protected health information. Exploitation may result in data breaches, leading to legal penalties or reputational damage.

Mitigation Strategies

Upgrade Apache Roller to version 6.1.6 or later immediately. Disable the Trackback feature if upgrading is not possible, as it is the vulnerable component.

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