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CVE-2026-22035

7.7 · HIGH

Greenshot is an open source Windows screenshot utility.

Published Jan 8, 2026CWE-78EPSS 1.03%

Overview

CVE-2026-22035 is a high-severity vulnerability. It was published on January 8, 2026 and has a CVSS 3.1 base score of 7.7 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/greenshot/greenshot/commit/5dedd5c9f0a9896fa0af1d4980d875a48bf432cbGitHubgithub.com/greenshot/greenshot/releases/tag/v1.3.311GitHubgithub.com/greenshot/greenshot/security/advisories/GHSA-7hvw-q8q5-gpmjGitHubgithub.com/greenshot/greenshot/security/advisories/GHSA-7hvw-q8q5-gpmj

How CyberStrike helps

Frequently asked questions

What is CVE-2026-22035?

CVE-2026-22035 is a high-severity vulnerability. It was published on January 8, 2026 and has a CVSS 3.1 base score of 7.7 (HIGH).

How severe is CVE-2026-22035?

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-22035?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-22035?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-22035 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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