{"id":"GHSA-2c8c-84w2-j38j","summary":"Improper Restriction of XML External Entity Reference in Plone","details":"Plone before 5.2.3 allows XXE attacks via a feature that is protected by an unapplied permission of plone.schemaeditor.ManageSchemata (therefore, only available to the Manager role).","aliases":["CVE-2020-28736","PYSEC-2020-248","PYSEC-2026-2879","PYSEC-2026-2882","PYSEC-2026-2885","PYSEC-2026-735"],"modified":"2026-07-13T16:43:28.446541636Z","published":"2021-04-07T21:14:00Z","database_specific":{"cwe_ids":["CWE-611"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2021-04-07T19:33:49Z","nvd_published_at":"2020-12-30T19:15:00Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-28736"},{"type":"WEB","url":"https://github.com/plone/Products.CMFPlone/issues/3209"},{"type":"WEB","url":"https://dist.plone.org/release/5.2.3/RELEASE-NOTES.txt"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-2c8c-84w2-j38j"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2020-248.yaml"},{"type":"WEB","url":"https://www.misakikata.com/codes/plone/python-en.html"}],"affected":[{"package":{"name":"plone","ecosystem":"PyPI","purl":"pkg:pypi/plone"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.2.3"}]}],"versions":["3.2","3.2.1","3.2.2","3.2.3","3.2a1","3.2rc1","3.3","3.3.1","3.3.2","3.3.3","3.3.4","3.3.5","3.3.6","3.3b1","3.3rc1","3.3rc2","3.3rc3","3.3rc4","3.3rc5","4.0","4.0.1","4.0.10","4.0.2","4.0.3","4.0.4","4.0.5","4.0.6","4.0.7","4.0.8","4.0.9","4.0a1","4.0a2","4.0a3","4.0a4","4.0a5","4.0b1","4.0b2","4.0b3","4.0b4","4.0b5","4.0rc1","4.1","4.1.1","4.1.2","4.1.3","4.1.4","4.1.5","4.1.6","4.1a1","4.1a2","4.1a3","4.1b1","4.1b2","4.1rc2","4.1rc3","4.2","4.2.1","4.2.2","4.2.3","4.2.4","4.2.5","4.2.6","4.2.7","4.2a1","4.2a2","4.2b1","4.2b2","4.2rc1","4.2rc2","4.3","4.3.1","4.3.10","4.3.11","4.3.12","4.3.13","4.3.14","4.3.15","4.3.16","4.3.17","4.3.18","4.3.19","4.3.2","4.3.20","4.3.3","4.3.4","4.3.5","4.3.6","4.3.7","4.3.8","4.3.9","4.3a1","4.3a2","4.3b1","4.3b2","4.3rc1","5.0","5.0.1","5.0.10","5.0.2","5.0.3","5.0.4","5.0.5","5.0.6","5.0.7","5.0.8","5.0.9","5.0a1","5.0a2","5.0a3","5.0b1","5.0b2","5.0b3","5.0b4","5.0rc1","5.0rc2","5.0rc3","5.1.0","5.1.1","5.1.2","5.1.3","5.1.4","5.1.5","5.1.6","5.1.7","5.1a1","5.1a2","5.1b1","5.1b2","5.1b3","5.1b4","5.1rc1","5.1rc2","5.2.0","5.2.1","5.2.2","5.2a1","5.2a2","5.2b1","5.2rc1","5.2rc2","5.2rc3","5.2rc4","5.2rc5"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/04/GHSA-2c8c-84w2-j38j/GHSA-2c8c-84w2-j38j.json"}},{"package":{"name":"plone-app-event","ecosystem":"PyPI","purl":"pkg:pypi/plone-app-event"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.10"}]}],"versions":["1.0","1.0.1","1.0.2","1.0.3","1.0.4","1.0.5","1.0.6","1.0a1","1.0a2","1.0b1","1.0b2","1.0b3","1.0b4","1.0b5","1.0b6","1.0b7","1.0b8","1.0rc1","1.0rc2","1.0rc3","1.1","1.1.1","1.1.10","1.1.11","1.1.12","1.1.13","1.1.2","1.1.3","1.1.4","1.1.5","1.1.6","1.1.7","1.1.8","1.1.a1","1.1b1","1.2","1.2.1","1.2.2","1.2.3","1.2.4","1.2.5","1.2.6","1.2.7","2.0","2.0.1","2.0.10","2.0.11","2.0.12","2.0.13","2.0.14","2.0.15","2.0.2","2.0.3","2.0.4","2.0.5","2.0.6","2.0.7","2.0.8","2.0.9","2.0a1","2.0a10","2.0a11","2.0a12","2.0a13","2.0a2","2.0a3","2.0a4","2.0a5","2.0a6","2.0a7","2.0a8","2.0a9","2.0b1","2.0b2","3.0","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.1","3.1.1","3.2.0","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.2.6","3.2.7","3.2.8","3.2.9"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/04/GHSA-2c8c-84w2-j38j/GHSA-2c8c-84w2-j38j.json"}},{"package":{"name":"plone-app-theming","ecosystem":"PyPI","purl":"pkg:pypi/plone-app-theming"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.6"}]}],"versions":["1.0","1.0.1","1.0.2","1.0.3","1.0.4","1.0b1","1.0b2","1.0b3","1.0b4","1.0b5","1.0b6","1.0b7","1.0b8","1.0b9","1.1","1.1.1","1.1.2","1.1.3","1.1.4","1.1.5","1.1.6","1.1.7","1.1.8","1.1a1","1.1a2","1.1b1","1.1b2","1.2.0","1.2.1","1.2.10","1.2.11","1.2.12","1.2.13","1.2.14","1.2.15","1.2.16","1.2.17","1.2.18","1.2.19","1.2.2","1.2.3","1.2.4","1.2.5","1.2.6","1.2.7","1.2.8","1.2.9","1.3.0","1.3.1","1.3.2","1.3.3","1.3.4","1.3.5","1.3.6","2.0","2.0.1","2.0.2","2.0.3","2.0.4","2.0.5","3.0.0","3.0.1","4.0.0","4.0.1","4.0.2","4.0.3","4.0.4","4.0.5","4.0.6","4.1.0","4.1.1","4.1.2","4.1.3","4.1.4","4.1.5"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/04/GHSA-2c8c-84w2-j38j/GHSA-2c8c-84w2-j38j.json"}},{"package":{"name":"plone-app-dexterity","ecosystem":"PyPI","purl":"pkg:pypi/plone-app-dexterity"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.8"}]}],"versions":["1.0","1.0.1","1.0.2","1.0.3","1.0a1","1.0a2","1.0a3","1.0a4","1.0a5","1.0a6","1.0a7","1.0b1","1.0b2","1.0b3","1.0b4","1.0rc1","1.1","1.2","1.2.1","1.2.2","2.0","2.0.1","2.0.10","2.0.11","2.0.12","2.0.13","2.0.14","2.0.15","2.0.16","2.0.17","2.0.18","2.0.19","2.0.2","2.0.3","2.0.4","2.0.5","2.0.6","2.0.7","2.0.8","2.0.9","2.1.0","2.1.1","2.1.1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