{"cve":"CVE-2021-33507","nvd":{"published":"2021-05-21T22:15:08.470","modified":"2026-06-17T03:54:41.843","status":"Modified","description":"Zope Products.CMFCore before 2.5.1 and Products.PluggableAuthService before 2.6.2, as used in Plone through 5.2.4 and other products, allow Reflected XSS.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79"],"references":["http://www.openwall.com/lists/oss-security/2021/05/22/1","https://plone.org/security/hotfix/20210518/reflected-xss-in-various-spots","http://www.openwall.com/lists/oss-security/2021/05/22/1","https://plone.org/security/hotfix/20210518/reflected-xss-in-various-spots"],"products":["plone:plone","zope:zope"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-33507","score":0.0075,"percentile":0.54962,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-35rg-466w-77h3","url":"https://osv.dev/vulnerability/GHSA-35rg-466w-77h3","summary":"Cross-site scripting in Products.CMFCore, Products.PluggableAuthService, Plone","modified":"2026-07-13T16:43:09.732565422Z","packages":[{"ecosystem":"PyPI","name":"products-cmfcore","purl":"pkg:pypi/products-cmfcore","ranges":["<2.5.1"],"fixed":["2.5.1"]},{"ecosystem":"PyPI","name":"products-pluggableauthservice","purl":"pkg:pypi/products-pluggableauthservice","ranges":["<2.6.2"],"fixed":["2.6.2"]},{"ecosystem":"PyPI","name":"plone","purl":"pkg:pypi/plone","ranges":["<=5.2.4"],"fixed":[]}]},{"id":"PYSEC-2021-79","url":"https://osv.dev/vulnerability/PYSEC-2021-79","summary":"","modified":"2026-07-13T16:43:09.732565422Z","packages":[{"ecosystem":"PyPI","name":"plone","purl":"pkg:pypi/plone","ranges":["<5.2.5"],"fixed":["5.2.5"]}]},{"id":"PYSEC-2026-2961","url":"https://osv.dev/vulnerability/PYSEC-2026-2961","summary":"Cross-site scripting in Products.CMFCore, Products.PluggableAuthService, Plone","modified":"2026-07-13T16:43:09.732565422Z","packages":[{"ecosystem":"PyPI","name":"products-cmfcore","purl":"pkg:pypi/products-cmfcore","ranges":["<2.5.1"],"fixed":["2.5.1"]}]},{"id":"PYSEC-2026-2967","url":"https://osv.dev/vulnerability/PYSEC-2026-2967","summary":"Cross-site scripting in Products.CMFCore, Products.PluggableAuthService, Plone","modified":"2026-07-13T16:43:09.732565422Z","packages":[{"ecosystem":"PyPI","name":"products-pluggableauthservice","purl":"pkg:pypi/products-pluggableauthservice","ranges":["<2.6.2"],"fixed":["2.6.2"]}]}],"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."]}