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CVE-2026-22035

Greenshot Vulnerable to OS Command Injection via ExternalCommand Plugin

CVSS 7.8 HIGHEPSS 0.9%CWE-78
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.
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Productos afectados
greenshot · greenshot

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Referencias
https://github.com/greenshot/greenshot/commit/5dedd5c9f0a9896fa0af1d4980d875a48bf432cbhttps://github.com/greenshot/greenshot/releases/tag/v1.3.311https://github.com/greenshot/greenshot/security/advisories/GHSA-7hvw-q8q5-gpmj