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    CVE-2026-22035

    Greenshot is an open source Windows screenshot utility. Versions 1.3.310 and below arvulnerable to OS Command Injection through unsanitized filename processing. The FormatArguments method in ExternalCommandDestination.cs:269 uses string.Format() to insert user-controlled filenames directly into shell commands without sanitization, allowing attackers to execute arbitrary commands by crafting malicious filenames containing shell metacharacters. This issue is fixed in version 1.3.311.

    Published:Jan 8, 2026
    Last Modified:Apr 18, 2026
    EPS:Jan 8, 2026
    EPSS Score:0.00042
    CVSS Score:7.8

    Affected Products

    Vendor
    Getgreenshot
    Product
    Greenshot
    Vendor
    Greenshot
    Product
    Greenshot
    Vendor
    Microsoft
    Product
    Windows

    Exploits

    https://github.com/greenshot/greenshot/security/advisories/GHSA-7hvw-q8q5-gpmjhttps://github.com/greenshot/greenshot/security/advisories/GHSA-7hvw-q8q5-gpmj

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High