{"cve":"CVE-2026-55798","nvd":{"published":"2026-07-06T19:17:08.830","modified":"2026-10-25T20:10:00.147","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L","score":4.5},"cwes":["CWE-78"],"references":["https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst","https://github.com/python-pillow/Pillow/commit/8404ea5fe5df40fc34aa1e51403dd6fce0778b8a","https://github.com/python-pillow/Pillow/commit/88194166691b7b603529b8b036ab3ab9cedd2de4","https://github.com/python-pillow/Pillow/commit/b0e06caa64c1405aa3da0bb1d2bd9a77ca22de7f","https://github.com/python-pillow/Pillow/security/advisories/GHSA-4x4j-2g7c-83w6"],"products":["python:pillow"],"source":"nvd","synced_at":"2026-10-25T23:44:34.550481224+00:00"},"epss":{"cve":"CVE-2026-55798","score":0.00179,"percentile":0.07376,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-4x4j-2g7c-83w6","url":"https://osv.dev/vulnerability/GHSA-4x4j-2g7c-83w6","summary":"Pillow: WindowsViewer.get_command() OS command injection via unescaped shell path","modified":"2026-09-10T03:51:10.324377232Z","packages":[{"ecosystem":"PyPI","name":"pillow","purl":"pkg:pypi/pillow","ranges":["<12.3.0"],"fixed":["12.3.0"]}]},{"id":"PYSEC-2026-2257","url":"https://osv.dev/vulnerability/PYSEC-2026-2257","summary":"","modified":"2026-07-13T07:26:48.229039344Z","packages":[{"ecosystem":"PyPI","name":"pillow","purl":"pkg:pypi/pillow","ranges":["<12.3.0"],"fixed":["12.3.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}