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In MapServer before 7.0.3, OGR driver error messages are too verbose and may leak sensitive information if data connection fails.
Use CWE-200, Osgeo vendor hub and Mapserver product page to widen CVE-2016-9839 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2010-2540, CVE-2017-5522 and CVE-2025-59431 for nearby disclosures in the same product family.