How broadly exploitable is this vulnerability?

Exploitation is typically local: an attacker needs a way to influence or control a screenshot filename that Greenshot processes through its external command feature. In shared workstations or environments where filenames can be manipulated indirectly, this can still be a meaningful risk.

What kind of access does an attacker need?

The attacker must be able to cause Greenshot to handle a screenshot with a crafted filename and trigger the external command path. This usually means local user access, or a scenario where another application or workflow generates filenames consumed by Greenshot.

What is the safest general fix pattern?

The most robust fix is to stop building shell command strings with raw string formatting and instead use APIs that pass arguments as structured parameters. If the shell must be used, consistently quote and escape all user-influenced values and validate them against a strict allowed pattern.

Severity:

HIGH RISK

(7.7)

OS Command Injection (CWE-78) via Filename Handling in Greenshot External Command Destination

CVE-2026-22035

Published:

Jan 7, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-78

Impact:

Arbitrary Command Execution on the Host System

Severity:

HIGH RISK

(7.7)

CVSS Version:

3.1

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-78

Impact:

Arbitrary Command Execution on the Host System

Severity:

HIGH RISK

(7.7)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

OS Command Injection (CWE-78) via Filename Handling in Greenshot External Command Destination

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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