pip CVE Archive

ujson CVE Vulnerabilities

All known CVEs affecting ujson. Kodem’s runtime-powered SCA reveals which are actually reachable in your application.

Known vulnerabilities
CVE
Summary
Severity
CVE-2026-54911
UltraJSON: Malformed/Truncated UTF-8 Accepted and Silently Rewritten in…
Medium
CVE-2026-44660
UltraJSON has a Memory Leak in ujson.dump() on Write Failure
High
CVE-2026-32875
UltraJSON has an integer overflow handling large indent leads to buffer…
High
CVE-2026-32874
UltraJSON has a Memory Leak parsing large integers allows DoS
High
CVE-2022-31116
Incorrect handling of invalid surrogate pair characters
High
CVE-2022-31117
Potential double free of buffer during string decoding
Medium
CVE-2021-45958
UltraJSON vulnerable to Out-of-bounds Write
Medium

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