{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55798","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-17T14:40:28.381Z","datePublished":"2026-07-06T18:44:38.441Z","dateUpdated":"2026-07-07T15:19:40.072Z"},"containers":{"cna":{"title":"Pillow: WindowsViewer.get_command() OS command injection via unescaped shell path","problemTypes":[{"descriptions":[{"cweId":"CWE-78","lang":"en","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":4.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L","version":"3.1"}}],"references":[{"name":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-4x4j-2g7c-83w6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-4x4j-2g7c-83w6"},{"name":"https://github.com/python-pillow/Pillow/commit/8404ea5fe5df40fc34aa1e51403dd6fce0778b8a","tags":["x_refsource_MISC"],"url":"https://github.com/python-pillow/Pillow/commit/8404ea5fe5df40fc34aa1e51403dd6fce0778b8a"},{"name":"https://github.com/python-pillow/Pillow/commit/88194166691b7b603529b8b036ab3ab9cedd2de4","tags":["x_refsource_MISC"],"url":"https://github.com/python-pillow/Pillow/commit/88194166691b7b603529b8b036ab3ab9cedd2de4"},{"name":"https://github.com/python-pillow/Pillow/commit/b0e06caa64c1405aa3da0bb1d2bd9a77ca22de7f","tags":["x_refsource_MISC"],"url":"https://github.com/python-pillow/Pillow/commit/b0e06caa64c1405aa3da0bb1d2bd9a77ca22de7f"},{"name":"https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst","tags":["x_refsource_MISC"],"url":"https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst"}],"affected":[{"vendor":"python-pillow","product":"Pillow","versions":[{"version":"< 12.3.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-06T18:44:38.441Z"},"descriptions":[{"lang":"en","value":"Pillow is a Python imaging library. Prior to 12.3.0, WindowsViewer.get_command() constructed a cmd.exe shell command by directly embedding a file path into an f-string without escaping and passed the result to subprocess.Popen(..., shell=True), allowing shell metacharacters in the file path to inject arbitrary cmd.exe commands. This issue is fixed in version 12.3.0."}],"source":{"advisory":"GHSA-4x4j-2g7c-83w6","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-4x4j-2g7c-83w6","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-07T15:19:30.348707Z","id":"CVE-2026-55798","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-07T15:19:40.072Z"}}]}}