CVE-2026-22035: Greenshot Vulnerable to OS Command Injection via ExternalCommand Plugin

Published Jan 8, 2026
·
Updated

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 Software

2 affected components
Greenshot Greenshot<=1.3.310
Getgreenshot Greenshot<1.3.311

Remediation

Patch Available

https://github.com/greenshot/greenshot/commit/5dedd5c9f0a9896fa0af1d4980d875a48bf432cb

Event History

Jan 8, 2026
CVE Published
via MITRE·12:10 AM
Data Sourced
via MITRE·12:10 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·01:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
Aug 29, 58046
Event
via FIRST·03:25 AM
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Frequently Asked Questions

1

What is the severity of CVE-2026-22035?

CVE-2026-22035 is rated as a medium severity vulnerability due to its potential for OS command injection.

2

How do I fix CVE-2026-22035?

To fix CVE-2026-22035, upgrade Greenshot to version 1.3.311 or newer.

3

What versions of Greenshot are affected by CVE-2026-22035?

CVE-2026-22035 affects Greenshot versions 1.3.310 and below.

4

What type of vulnerability is CVE-2026-22035?

CVE-2026-22035 is categorized as an OS Command Injection vulnerability.

5

What component of Greenshot is involved in CVE-2026-22035?

CVE-2026-22035 involves the FormatArguments method in the ExternalCommandDestination.cs file.

Company

Resources

Contact

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