{"cve":"CVE-2020-28734","nvd":{"published":"2020-12-30T19:15:13.263","modified":"2026-06-17T03:10:43.747","status":"Modified","description":"Plone before 5.2.3 allows XXE attacks via a feature that is explicitly only available to the Manager role.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-611"],"references":["https://dist.plone.org/release/5.2.3/RELEASE-NOTES.txt","https://github.com/plone/Products.CMFPlone/issues/3209","https://www.misakikata.com/codes/plone/python-en.html","https://dist.plone.org/release/5.2.3/RELEASE-NOTES.txt","https://github.com/plone/Products.CMFPlone/issues/3209"],"products":["plone:plone"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-28734","score":0.01453,"percentile":0.73433,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-wq6x-g685-w5f2","url":"https://osv.dev/vulnerability/GHSA-wq6x-g685-w5f2","summary":"Improper Restriction of XML External Entity Reference in Plone","modified":"2026-07-13T16:43:11.751432633Z","packages":[{"ecosystem":"PyPI","name":"plone","purl":"pkg:pypi/plone","ranges":["<5.2.3"],"fixed":["5.2.3"]},{"ecosystem":"PyPI","name":"plone-app-event","purl":"pkg:pypi/plone-app-event","ranges":["<3.2.10"],"fixed":["3.2.10"]},{"ecosystem":"PyPI","name":"plone-app-theming","purl":"pkg:pypi/plone-app-theming","ranges":["<4.1.6"],"fixed":["4.1.6"]},{"ecosystem":"PyPI","name":"plone-app-dexterity","purl":"pkg:pypi/plone-app-dexterity","ranges":["<2.6.8"],"fixed":["2.6.8"]},{"ecosystem":"PyPI","name":"plone-supermodel","purl":"pkg:pypi/plone-supermodel","ranges":["<1.6.3"],"fixed":["1.6.3"]}]},{"id":"PYSEC-2020-246","url":"https://osv.dev/vulnerability/PYSEC-2020-246","summary":"","modified":"2026-07-13T16:43:11.751432633Z","packages":[{"ecosystem":"PyPI","name":"plone","purl":"pkg:pypi/plone","ranges":["<5.2.3"],"fixed":["5.2.3"]}]},{"id":"PYSEC-2026-2880","url":"https://osv.dev/vulnerability/PYSEC-2026-2880","summary":"Improper Restriction of XML External Entity Reference in Plone","modified":"2026-07-13T16:43:11.751432633Z","packages":[{"ecosystem":"PyPI","name":"plone-app-dexterity","purl":"pkg:pypi/plone-app-dexterity","ranges":["<2.6.8"],"fixed":["2.6.8"]}]},{"id":"PYSEC-2026-2883","url":"https://osv.dev/vulnerability/PYSEC-2026-2883","summary":"Improper Restriction of XML External Entity Reference in Plone","modified":"2026-07-13T16:43:11.751432633Z","packages":[{"ecosystem":"PyPI","name":"plone-app-event","purl":"pkg:pypi/plone-app-event","ranges":["<3.2.10"],"fixed":["3.2.10"]}]},{"id":"PYSEC-2026-2886","url":"https://osv.dev/vulnerability/PYSEC-2026-2886","summary":"Improper Restriction of XML External Entity Reference in Plone","modified":"2026-07-13T16:43:11.751432633Z","packages":[{"ecosystem":"PyPI","name":"plone-app-theming","purl":"pkg:pypi/plone-app-theming","ranges":["<4.1.6"],"fixed":["4.1.6"]}]},{"id":"PYSEC-2026-736","url":"https://osv.dev/vulnerability/PYSEC-2026-736","summary":"Improper Restriction of XML External Entity Reference in Plone","modified":"2026-07-13T16:43:11.751432633Z","packages":[{"ecosystem":"PyPI","name":"plone-supermodel","purl":"pkg:pypi/plone-supermodel","ranges":["<1.6.3"],"fixed":["1.6.3"]}]}],"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."]}