{"answers":{"affected":"15 open source packages ship an affected version, including plone, Plone and plone-app-dexterity. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-28736 in the wild and no public exploit code.","fix":"Upgrade plone to 5.2.3 or later.","what":"CVE-2020-28736 is a high-severity vulnerability in Plone Plone, published on 30 Dec 2020. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-28736 and fix it if it is affected.\n\nWhat it is: CVE-2020-28736 is a high-severity vulnerability in Plone Plone, published on 30 Dec 2020. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-28736 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- plone (PyPI): affected all versions; fixed in 5.2.3\n- plone (PyPI): affected all versions; fixed in 5.2.3\n- Plone (PyPI): affected all versions; fixed in 5.2.3\n- plone-app-dexterity (PyPI): affected all versions; fixed in 2.6.8\n- plone-app-dexterity (PyPI): affected all versions; fixed in 2.6.8\n- plone-app-event (PyPI): affected all versions; fixed in 3.2.10\n- plone-app-event (PyPI): affected all versions; fixed in 3.2.10\n- plone-app-theming (PyPI): affected all versions; fixed in 4.1.6\n- plone-app-theming (PyPI): affected all versions; fixed in 4.1.6\n- plone-supermodel (PyPI): affected all versions; fixed in 1.6.3\n- plone-supermodel (PyPI): affected all versions; fixed in 1.6.3\n- plone.app.dexterity (PyPI): affected all versions; fixed in 2.6.8\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2020-28736/ (Markdown: https://insights.sbomify.com/CVE-2020-28736/index.md)","id":"CVE-2020-28736","markdown":"https://insights.sbomify.com/CVE-2020-28736/index.md","name":"CVE-2020-28736","record":{"aliases":["GHSA-2c8c-84w2-j38j","PYSEC-2020-248","PYSEC-2026-2879","PYSEC-2026-2882","PYSEC-2026-2885","PYSEC-2026-735"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Plone CMS","requires_auth":"low_privilege","summary":"An attacker with Manager role can exploit an XXE vulnerability in Plone to read sensitive files or execute code.","user_interaction":"not_required","vuln_class":"xxe"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"plone","vendor":"plone"}],"cvss":{"score":8.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-611","name":"Improper Restriction of XML External Entity Reference"}],"description":"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).","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Improper Restriction of XML External Entity Reference in Plone","id":"CVE-2020-28736","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"plone:plone","products":["plone:plone"],"type":"xxe","year":"2020"},"n_packages":15,"n_references":3,"next":{"headline":"Memory corruption in n/a","id":"CVE-2020-28759"},"packages":[{"ecosystem":"PyPI","fixed":["5.2.3"],"introduced":["0"],"last_affected":[],"package":"Plone","purl":null,"source":"GHSA-2c8c-84w2-j38j"},{"ecosystem":"PyPI","fixed":["5.2.3"],"introduced":["0"],"last_affected":[],"package":"plone","purl":"pkg:pypi/plone","source":"GHSA-2c8c-84w2-j38j"},{"ecosystem":"PyPI","fixed":["5.2.3"],"introduced":["0"],"last_affected":[],"package":"plone","purl":"pkg:pypi/plone","source":"PYSEC-2020-248"},{"ecosystem":"PyPI","fixed":["2.6.8"],"introduced":["0"],"last_affected":[],"package":"plone-app-dexterity","purl":"pkg:pypi/plone-app-dexterity","source":"GHSA-2c8c-84w2-j38j"},{"ecosystem":"PyPI","fixed":["2.6.8"],"introduced":["0"],"last_affected":[],"package":"plone-app-dexterity","purl":"pkg:pypi/plone-app-dexterity","source":"PYSEC-2026-2879"},{"ecosystem":"PyPI","fixed":["3.2.10"],"introduced":["0"],"last_affected":[],"package":"plone-app-event","purl":"pkg:pypi/plone-app-event","source":"GHSA-2c8c-84w2-j38j"},{"ecosystem":"PyPI","fixed":["3.2.10"],"introduced":["0"],"last_affected":[],"package":"plone-app-event","purl":"pkg:pypi/plone-app-event","source":"PYSEC-2026-2882"},{"ecosystem":"PyPI","fixed":["4.1.6"],"introduced":["0"],"last_affected":[],"package":"plone-app-theming","purl":"pkg:pypi/plone-app-theming","source":"GHSA-2c8c-84w2-j38j"},{"ecosystem":"PyPI","fixed":["4.1.6"],"introduced":["0"],"last_affected":[],"package":"plone-app-theming","purl":"pkg:pypi/plone-app-theming","source":"PYSEC-2026-2885"},{"ecosystem":"PyPI","fixed":["1.6.3"],"introduced":["0"],"last_affected":[],"package":"plone-supermodel","purl":"pkg:pypi/plone-supermodel","source":"GHSA-2c8c-84w2-j38j"},{"ecosystem":"PyPI","fixed":["1.6.3"],"introduced":["0"],"last_affected":[],"package":"plone-supermodel","purl":"pkg:pypi/plone-supermodel","source":"PYSEC-2026-735"},{"ecosystem":"PyPI","fixed":["2.6.8"],"introduced":["0"],"last_affected":[],"package":"plone.app.dexterity","purl":null,"source":"GHSA-2c8c-84w2-j38j"},{"ecosystem":"PyPI","fixed":["3.2.10"],"introduced":["0"],"last_affected":[],"package":"plone.app.event","purl":null,"source":"GHSA-2c8c-84w2-j38j"},{"ecosystem":"PyPI","fixed":["4.1.6"],"introduced":["0"],"last_affected":[],"package":"plone.app.theming","purl":null,"source":"GHSA-2c8c-84w2-j38j"},{"ecosystem":"PyPI","fixed":["1.6.3"],"introduced":["0"],"last_affected":[],"package":"plone.supermodel","purl":null,"source":"GHSA-2c8c-84w2-j38j"}],"prev":{"headline":"SSRF attacks via tracebacks in Plone","id":"CVE-2020-28735"},"products":["n/a"],"published":"2020-12-30","related":[{"cvss_score":9.9,"headline":"Incorrect Permission Assignment for Critical Resource in Plone","id":"CVE-2021-33509","kev_date_added":null,"published":"2021-05-21"},{"cvss_score":9.8,"headline":"Hardcoded credentials in n/a","id":"CVE-2020-35190","kev_date_added":null,"published":"2020-12-17"},{"cvss_score":9.8,"headline":"Plone Unauthenticated Write Vulnerability","id":"CVE-2020-7941","kev_date_added":null,"published":"2020-01-23"},{"cvss_score":9.3,"headline":"Zope Command Execution Vulnerability","id":"CVE-2011-3587","kev_date_added":null,"published":"2011-10-10"},{"cvss_score":8.8,"headline":"Server-Side Request Forgery in Plone CMS","id":"CVE-2021-33926","kev_date_added":null,"published":"2023-02-17"},{"cvss_score":8.8,"headline":"Improper Restriction of XML External Entity Reference in Plone","id":"CVE-2020-28734","kev_date_added":null,"published":"2020-12-30"},{"cvss_score":8.8,"headline":"SSRF attacks via tracebacks in Plone","id":"CVE-2020-28735","kev_date_added":null,"published":"2020-12-30"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"An attacker with Manager role can exploit an XXE vulnerability in Plone to read sensitive files or execute code.","url":"https://insights.sbomify.com/CVE-2020-28736/"}