{"cve":"CVE-2021-32633","nvd":{"published":"2021-05-21T14:15:07.977","modified":"2026-06-17T03:53:18.987","status":"Modified","description":"Zope is an open-source web application server. In Zope versions prior to 4.6 and 5.2, users can access untrusted modules indirectly through Python modules that are available for direct use. By default, only users with the Manager role can add or edit Zope Page Templates through the web, but sites that allow untrusted users to add/edit Zope Page Templates through the web are at risk from this vulnerability. The problem has been fixed in Zope 5.2 and 4.6. As a workaround, a site administrator can restrict adding/editing Zope Page Templates through the web using the standard Zope user/role permission mechanisms. Untrusted users should not be assigned the Zope Manager role and adding/editing Zope Page Templates through the web should be restricted to trusted users only.","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-22"],"references":["http://www.openwall.com/lists/oss-security/2021/05/21/1","http://www.openwall.com/lists/oss-security/2021/05/22/1","https://cyllective.com/blog/post/plone-authenticated-rce-cve-2021-32633/","https://github.com/zopefoundation/Zope/commit/1f8456bf1f908ea46012537d52bd7e752a532c91","https://github.com/zopefoundation/Zope/security/advisories/GHSA-5pr9-v234-jw36"],"products":["plone:plone","zope:zope"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-32633","score":0.01858,"percentile":0.7922,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5pr9-v234-jw36","url":"https://osv.dev/vulnerability/GHSA-5pr9-v234-jw36","summary":"Remote Code Execution via traversal in TAL expressions","modified":"2026-07-09T16:56:33.295188851Z","packages":[{"ecosystem":"PyPI","name":"zope","purl":"pkg:pypi/zope","ranges":["<4.6"],"fixed":["4.6"]},{"ecosystem":"PyPI","name":"zope","purl":"pkg:pypi/zope","ranges":[">=5.0 <5.2"],"fixed":["5.2"]}]},{"id":"PYSEC-2021-88","url":"https://osv.dev/vulnerability/PYSEC-2021-88","summary":"","modified":"2026-07-09T16:56:33.295188851Z","packages":[{"ecosystem":"PyPI","name":"zope","purl":"pkg:pypi/zope","ranges":["<4.6",">=5.0 <5.2"],"fixed":["4.6","5.2"]}]}],"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."]}