CVE-2026-22035: Greenshot is an open source Windows screenshot utility

Q: How do I fix CVE-2026-22035?

greenshot: upgrade to 1.3.311. Exact commands for each OS are on this page.

Q: Is CVE-2026-22035 being exploited?

CVE-2026-22035 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-22035 affect?

CVE-2026-22035 affects greenshot. Severity is high (CVSS 7.7). 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.For

Q: How urgent is CVE-2026-22035?

Priority 48/100. High severity; Public exploit reference

This month

HIGH 7.7UPGRADE

CVE-2026-22035 is a high-severity flaw (CVSS 7.7) affecting greenshot. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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. Thi

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.7 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-01-08
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: getgreenshot

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-08 01:15 UTCPublished CVE record published
2026-06-17 10:19 UTCUpdated Record last modified

getgreenshot greenshot UPGRADE

Affected: < 1.3.311

Fixed in: 1.3.311

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy greenshot || rpm -q greenshot || greenshot --version

2. UPGRADE to 1.3.311 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade greenshot

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade greenshot

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-22035?

greenshot: upgrade to 1.3.311. Exact commands for each OS are on this page.

Is CVE-2026-22035 being exploited?

CVE-2026-22035 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-22035 affect?

CVE-2026-22035 affects greenshot. Severity is high (CVSS 7.7). 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.For

How urgent is CVE-2026-22035?

Priority 48/100. High severity; Public exploit reference

Software pages

Windows vulnerabilities

Related CVEs

CVE-2025-59050 HIGH 8.4 UPGRADE Greenshot is an open source Windows screenshot utility
CVE-2026-25792 MEDIUM 6.5 UPGRADE Greenshot is an open source Windows screenshot utility

References

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