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CVE-2021-2471 is an incorrect-authorization vulnerability in Oracle MySQL Connector/J 8.0.26 and earlier. The issue affects SQLXML functionality, with product-specific assessments identifying invocation of the SQLXML getSource operation as relevant to exploitability. A successful attack can allow unauthorized access to critical data, potentially including all data accessible through the affected connector, and can cause the connector to hang or repeatedly crash.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository is a proof-of-concept (POC) for exploiting SQLXML XXE (XML External Entity) vulnerabilities in two popular JDBC drivers: H2 Database (CVE-2021-23463) and MySQL Connector/J (CVE-2021-2471). The structure includes Java source files for both H2 and MySQL test cases, SQL files for schema and data setup, and build files for Gradle. The main entry points are 'H2JDBC.java' and 'OracleJDBC.java', which connect to their respective databases, execute a query, and process the 'message' field as SQLXML. The payload in 'data.sql' contains a malicious XML document with an external entity referencing 'http://127.0.0.1:80/xxe.dtd', demonstrating how an attacker could trigger an XXE attack via database content. The repository is intended for security researchers to reproduce and study these vulnerabilities, not for weaponized exploitation.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unauthorized-access vulnerability in mysql-connector-java; the advisory's supplied description is truncated after “critical.”
Unauthorized-access vulnerability affecting MySQL Connector/J, described as affecting critical functionality or data.
MySQL Connector/J vulnerability that can permit unauthorized access to critical data.
A MySQL Connector/J vulnerability described as allowing unauthorized access to critical resources or data.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.