# CVE-2026-25792: Greenshot Vulnerable to OS Command Injection via ExternalCommand Plugin

> Local attackers can execute arbitrary code by hijacking the executable search path when the application launches explorer.exe via tray icon interaction.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 20 Mar 2026
- **Updated:** 24 Mar 2026
- **Also known as:** GHSA-f8v9-7fph-fr2j

## What is CVE-2026-25792?

CVE-2026-25792 is a medium-severity command injection vulnerability in greenshot, published on 20 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Greenshot is an open source Windows screenshot utility. Versions 1.3.312 and below have untrusted executable search path / binary hijacking vulnerability that allows a local attacker to execute arbitrary code when the affected Windows application launches explorer.exe without using an absolute path. The vulnerable behavior is triggered when the user double-clicks the application’s tray icon, which opens the directory containing the most recent screenshot captured by the application. By placing a malicious executable with the same name in a location searched prior to the legitimate Windows binary, an attacker can gain code execution in the context of the application. This issue did not have a patch at the time of publication.

Weakness: CWE-426 (Untrusted Search Path)

## Which versions are affected by CVE-2026-25792?

It affects 1 product.


Products: Getgreenshot Greenshot.

## How do I fix CVE-2026-25792?

No fix has been published for CVE-2026-25792 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-25792 being exploited?

There is no known exploitation of CVE-2026-25792 in the wild and no public exploit code.

## Other vulnerabilities in greenshot

- [CVE-2025-59050](https://insights.sbomify.com/CVE-2025-59050/): Greenshot — Insecure .NET deserialization via WM_COPYDATA enables local code execution (high 8.4)
- [CVE-2026-22035](https://insights.sbomify.com/CVE-2026-22035/): Greenshot Vulnerable to OS Command Injection via ExternalCommand Plugin (high 7.8)
- [CVE-2023-34634](https://insights.sbomify.com/CVE-2023-34634/): Deserialization in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-25792 and fix it if it is affected.

What it is: CVE-2026-25792 is a medium-severity command injection vulnerability in greenshot, published on 20 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-25792 in the wild and no public exploit code.

Affected product: greenshot. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-25792/ (Markdown: https://insights.sbomify.com/CVE-2026-25792/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-25792
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-25792
- OSV: https://osv.dev/vulnerability/CVE-2026-25792

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-25792/
Summaries are generated and may contain mistakes; the official description above is the record.