CVE-2026-22035

Greenshot Vulnerable to OS Command Injection via ExternalCommand Plugin

CVSS 7.8 HIGHEPSS 0.9%CWE-78

Vexday Risk Score

21Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 7.8EPSS 0.9%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

08 jan 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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

Produtos afetados

greenshot · greenshot

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Referências

https://github.com/greenshot/greenshot/commit/5dedd5c9f0a9896fa0af1d4980d875a48bf432cb https://github.com/greenshot/greenshot/releases/tag/v1.3.311 https://github.com/greenshot/greenshot/security/advisories/GHSA-7hvw-q8q5-gpmj