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

Quick assessment

Affected
greenshot greenshot
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GreenShot是GreenShot公司的一款适用于 Windows 的轻量级屏幕截图软件工具。 GreenShot 1.3.310及之前版本存在安全漏洞，该漏洞源于文件名处理不当，可能导致OS命令注入。

CVSS 7.8 · High EPSS 1.03% · P63

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-22035

Vulnerability Information
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Vulnerability Title
Greenshot Vulnerable to OS Command Injection via ExternalCommand Plugin
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
GreenShot 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GreenShot是GreenShot公司的一款适用于 Windows 的轻量级屏幕截图软件工具。 GreenShot 1.3.310及之前版本存在安全漏洞，该漏洞源于文件名处理不当，可能导致OS命令注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
greenshot greenshot < 1.3.311 -

II. Public POCs for CVE-2026-22035

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9685 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-22035

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Patches & Fixes for CVE-2026-22035 (1)

Vendor Advisories for CVE-2026-22035 (1)

Other References for CVE-2026-22035 (1)

IV. Related Vulnerabilities

Same product: greenshot
Same vendor: greenshot
Same weakness: CWE-78

V. Comments for CVE-2026-22035

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