CVE-2021-29002

5.4 mediumEPSS 0.8%

Medium (5.4) in plone plone. EPSS 0.8% chance of exploitation in the next 30 days.

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

Severity

5.4 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 55% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-03-24
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-38g6-x6jv-jwff	PyPI	plone	<=5.2.3	no fix published
PYSEC-2021-889	PyPI	plone	<=5.2.3	no fix published