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…

PriorityP346high7.3CVSS 3.1

AVLACLPRLUIRSUCHIHAH

EPSS

0.90%

55.1th percentile

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
getgreenshot	greenshot	< 1.3.311	1.3.311
greenshot	greenshot	< 1.3.311	1.3.311

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