ultrajson Summary

Latest vulnerabilities published by ultrajson

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27 May 2026

Memory Leak Vulnerability in UltraJSON Library from UltraJSON
CVE-2026-44660
UltrajsonUltrajson8.7HIGH

20 March 2026

Buffer Overflow and Infinite Loop in UltraJSON by May Lead to Denial of Service
CVE-2026-32875
UltrajsonUltrajson7.5HIGH
Memory Leak in UltraJSON JSON Encoder and Decoder Affecting Multiple Versions
CVE-2026-32874
UltrajsonUltrajson7.5HIGH

5 July 2022

Incorrect handling of invalid surrogate pair characters in ujson
CVE-2022-31116
UltrajsonUltrajson7.5HIGH
Double free of buffer during string decoding in ujson
CVE-2022-31117
UltrajsonUltrajson5.9MEDIUM

1 January 2022

Stack-Based Buffer Overflow in UltraJSON Library
CVE-2021-45958
Ultrajson ProjectUltrajson5.5MEDIUM