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CVE-2026-22035

HIGH

7.7

Description

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.

CVE Details

CVSS v3.1 Score7.7

SeverityHIGH

CVSS VectorCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack VectorLOCAL

ComplexityHIGH

Privileges RequiredNONE

User InteractionREQUIRED

Published1/8/2026

Last Modified1/27/2026

Sourcenvd

Honeypot Sightings0

Affected Products

getgreenshot:greenshot

Weaknesses (CWE)

CWE-78

References

https://github.com/greenshot/greenshot/commit/5dedd5c9f0a9896fa0af1d4980d875a48bf432cb(security-advisories@github.com)

https://github.com/greenshot/greenshot/releases/tag/v1.3.311(security-advisories@github.com)

https://github.com/greenshot/greenshot/security/advisories/GHSA-7hvw-q8q5-gpmj(security-advisories@github.com)

https://github.com/greenshot/greenshot/security/advisories/GHSA-7hvw-q8q5-gpmj(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.