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    2 vulnerabilities by jetperch

    CVE-2026-53720 (GCVE-0-2026-53720)

    Vulnerability from nvd – Published: 2026-09-03 15:30 – Updated: 2026-09-03 15:42
    VLAI
    Title
    pymonocypher: Potential heap buffer overflow on nb_blocks in argon2i_32 when provided buffer is too small
    Summary
    pymonocypher uses cython to wrap the Monocypher C library. Prior to version 4.0.2.8, the argon2i_32 implementation does not check the nb_blocks size. If the caller does not provide a sufficiently large buffer based on the API contract, then argon2i_32 will write past the end of the buffer and possibly corrupt the heap. This issue has been patched in version 4.0.2.8.
    Severity
    5.1 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-03 15:42 UTC
    CWE
    • CWE-122 - Heap-based Buffer Overflow
    • CWE-787 - Out-of-bounds Write
    • CWE-1284 - Improper Validation of Specified Quantity in Input
    Assigner
    References
    Impacted products
    Vendor Product Version
    jetperch pymonocypher Affected: < 4.0.2.8
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-53720 (GCVE-0-2026-53720)

    Vulnerability from cvelistv5 – Published: 2026-09-03 15:30 – Updated: 2026-09-03 15:42
    VLAI
    Title
    pymonocypher: Potential heap buffer overflow on nb_blocks in argon2i_32 when provided buffer is too small
    Summary
    pymonocypher uses cython to wrap the Monocypher C library. Prior to version 4.0.2.8, the argon2i_32 implementation does not check the nb_blocks size. If the caller does not provide a sufficiently large buffer based on the API contract, then argon2i_32 will write past the end of the buffer and possibly corrupt the heap. This issue has been patched in version 4.0.2.8.
    Severity
    5.1 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-03 15:42 UTC
    CWE
    • CWE-122 - Heap-based Buffer Overflow
    • CWE-787 - Out-of-bounds Write
    • CWE-1284 - Improper Validation of Specified Quantity in Input
    Assigner
    References
    Impacted products
    Vendor Product Version
    jetperch pymonocypher Affected: < 4.0.2.8
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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