Incorrect handling of invalid surrogate pair characters

ImpactWhat kind of vulnerability is it? Who is impacted?Anyone parsing JSON from an untrusted source is vulnerable.JSON strings that contain escaped surrogate characters not part of a proper surrogate pair were decoded incorrectly. Besides corrupting strings, this allowed for potential key...

PT-2026-51093

Name of the Vulnerable Software and Affected Versions UltraJSON versions prior to 5.13.0 Description The functions ujson.dumps, ujson.dump, and ujson.encode contain an issue when the reject bytes variable is set to False. In this configuration, the software may accept malformed or truncated UTF-8...