Plone XSS Vulnerability

MEDIUM 5.4CVE-2021-29002 · GHSA-38g6-x6jv-jwff · PYSEC-2021-889 · Published 24/03/2021 · updated 17/06/2026

In short

CVE-2021-29002 is a MEDIUM (CVSS 5.4) vulnerability affecting plone, plone (plone).
Chance of exploitation in the next 30 days (EPSS): 0.76%, higher than 55.3% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
plone PyPI	`≤ 5.2.3`	No fix yet
plone plone	`= 5.2.3`	No fix yet

A stored cross-site scripting (XSS) vulnerability in Plone CMS 5.2.3 exists in site-controlpanel via the form.widgets.site_title parameter.

NVD description

A stored cross-site scripting (XSS) vulnerability in Plone CMS 5.2.3 exists in site-controlpanel via the "form.widgets.site_title" parameter.

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Package

Affected versions

Patched versions

PyPI

≤ 5.2.3

No fix yet

= 5.2.3

No fix yet

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