{"id":"CVE-2026-22035","aliases":["EUVD-2026-1663","GHSA-7hvw-q8q5-gpmj"],"status":"published","title":"Greenshot Vulnerable to OS Command Injection via ExternalCommand Plugin","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.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01032,"percentile":0.64035,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2026-01-08T00:10:28Z","modified":"2026-10-28T02:30:47Z","products":[{"vendor":"getgreenshot","product":"greenshot"},{"vendor":"greenshot","product":"greenshot"}],"references":[{"url":"https://github.com/greenshot/greenshot/security/advisories/GHSA-7hvw-q8q5-gpmj","tags":["x_refsource_CONFIRM","exploit","Exploit","Vendor Advisory","advisory"]},{"url":"https://github.com/greenshot/greenshot/commit/5dedd5c9f0a9896fa0af1d4980d875a48bf432cb","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/greenshot/greenshot/releases/tag/v1.3.311","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22035.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22035","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-22035","title":"Greenshot Vulnerable to OS Command Injection via ExternalCommand Plugin","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.","status":"published","published":"2026-01-08T00:10:28.278Z","modified":"2026-02-26T15:04:55.208Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T13:39:05.585774Z"}],"euvd":[{"id":"EUVD-2026-1663","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.","status":"published","published":"2026-01-08T00:10:28Z","modified":"2026-02-26T15:04:55Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T19:48:26.495238Z"}],"nvd":[{"id":"CVE-2026-22035","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.","status":"published","published":"2026-01-08T01:15:55.847Z","modified":"2026-06-17T10:19:23.907Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:12:03.683495Z"}],"osv":[{"id":"CVE-2026-22035","title":"Greenshot Vulnerable to OS Command Injection via ExternalCommand Plugin","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.","status":"published","published":"2026-01-08T00:10:28.278Z","modified":"2026-10-28T02:30:47.219235546Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:44:58.42038Z"}]}}