Ultrajson

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    Products: 1
    Vulnerabilities: 4
    Known Exploited: 0
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    Critical Level Threats
    3
    High Level Threats
    1
    Medium Level Threats
    0
    Low Level Threats

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    Vulnerabilities

    CVE-2026-54911

    UltraJSON: Malformed/Truncated UTF-8 Accepted and Silently Rewritten in ujson.dumps()

    Last Modified: Jun 23, 2026
    Published: Jun 22, 2026

    CVE-2026-44660

    UltraJSON: Memory Leak in ujson.dump() on Write Failure

    Last Modified: Jun 02, 2026
    Published: May 27, 2026

    CVE-2026-32875

    UltraJSON has an integer overflow handling large indent leads to buffer overflow or infinite loop

    Last Modified: Mar 25, 2026
    Published: Mar 20, 2026

    CVE-2026-32874

    UltraJSON has a Memory Leak parsing large integers allows DoS

    Last Modified: Mar 25, 2026
    Published: Mar 20, 2026
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