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    2 vulnerabilities by danifus

    CVE-2026-44722 (GCVE-0-2026-44722)

    Vulnerability from nvd – Published: 2026-07-17 16:42 – Updated: 2026-07-17 17:25
    VLAI
    Title
    pyzipper: Encryption bypass for small files encrypted with pyzipper
    Summary
    pyzipper is a replacement for Python's zipfile that can read and write AES encrypted zip files. Prior to 0.4.0, a Python operator precedence bug in pyzipper/zipfile_aes.py caused the AE-2 format to never be automatically selected during encryption, causing encrypted entries to be written in AE-1 format and exposing the plaintext CRC32 checksum in the ZIP header and, for unseekable zip archives, in the datadescripter section, allowing an attacker who possesses the archive to brute-force candidate plaintexts for small or low-entropy files by comparing CRC32 values. This issue is fixed in version 0.4.0.
    Severity
    6.2 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-480 - Use of Incorrect Operator
    Assigner
    References
    Impacted products
    Vendor Product Version
    danifus pyzipper Affected: < 0.4.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        "title": "CISA ADP Vulnrichment"
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    CVE-2026-44722 (GCVE-0-2026-44722)

    Vulnerability from cvelistv5 – Published: 2026-07-17 16:42 – Updated: 2026-07-17 17:25
    VLAI
    Title
    pyzipper: Encryption bypass for small files encrypted with pyzipper
    Summary
    pyzipper is a replacement for Python's zipfile that can read and write AES encrypted zip files. Prior to 0.4.0, a Python operator precedence bug in pyzipper/zipfile_aes.py caused the AE-2 format to never be automatically selected during encryption, causing encrypted entries to be written in AE-1 format and exposing the plaintext CRC32 checksum in the ZIP header and, for unseekable zip archives, in the datadescripter section, allowing an attacker who possesses the archive to brute-force candidate plaintexts for small or low-entropy files by comparing CRC32 values. This issue is fixed in version 0.4.0.
    Severity
    6.2 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-480 - Use of Incorrect Operator
    Assigner
    References
    Impacted products
    Vendor Product Version
    danifus pyzipper Affected: < 0.4.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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