CVE-2026-56096
Received Received - Intake

Blind Data Extraction in Apache Solr Extension

Publication date: 2026-08-25

Last updated on: 2026-08-25

Assigner: TYPO3

Description
The extension passes the user-supplied search query parameter to Apache Solr without restricting advanced Solr query syntax such as wildcards, field selectors and range queries. A remote, unauthenticated attacker can use this syntax to enumerate indexed field names and extract their stored values through boolean- and range-based blind extraction techniques, independent of any site-specific configuration.

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Meta Information

Published
2026-08-25
Last Modified
2026-08-25
Generated
2026-08-25
AI Q&A
2026-08-25
EPSS Evaluated
N/A
NVD
CVE-2026-56096
EUVD
EUVD-2026-65349

Affected Vendors & Products

Currently, no data is known.

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-943 The product generates a query intended to access or manipulate data in a data store such as a database, but it does not neutralize or incorrectly neutralizes special elements that can modify the intended logic of the query.

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Executive Summary

This vulnerability involves an extension passing user-supplied search queries to Apache Solr without filtering advanced query syntax like wildcards or range queries. An attacker can exploit this to enumerate field names and extract stored values using blind extraction techniques.

Detection Guidance

To detect this vulnerability, inspect network traffic for Apache Solr queries containing advanced syntax like wildcards (*), field selectors (:), or range queries ([ ]). Check Solr logs for unusual boolean or range-based queries. Use tools like curl to test if field names can be enumerated or values extracted via blind techniques.

Impact Analysis

An attacker could gain unauthorized access to sensitive data stored in Solr indexes, such as user information or confidential documents. This could lead to data breaches, privacy violations, or further exploitation of the system.

Compliance Impact

This vulnerability could result in non-compliance with GDPR or HIPAA due to unauthorized data exposure. GDPR requires protecting personal data, while HIPAA mandates safeguarding health information. Exploitation may lead to legal penalties and reputational damage.

Mitigation Strategies

Immediately restrict Solr query syntax by disabling advanced features like wildcards, field selectors, and range queries in the extension's configuration. Validate and sanitize all user-supplied search queries to prevent injection of Solr-specific syntax.

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