CVE-2021-29002

MEDIUM

Plone CMS 5.2.3 - Stored Cross-Site Scripting via Site Control Panel Site Title Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-29002. PoCs published by Piyush Patil.

AI-analyzed exploit summary This exploit demonstrates a stored XSS vulnerability in Plone CMS 5.2.3 by injecting a malicious script into the 'Site title' field. The payload executes when the title is rendered in the browser.

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.

Exploits (1)

exploitdb WORKING POC
by Piyush Patil · textwebappsmultiple
https://www.exploit-db.com/exploits/49668

This exploit demonstrates a stored XSS vulnerability in Plone CMS 5.2.3 by injecting a malicious script into the 'Site title' field. The payload executes when the title is rendered in the browser.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Plone CMS 5.2.3
Auth required
Prerequisites: Access to a Plone CMS 5.2.3 instance · Manager credentials
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
https://www.exploit-db.com/exploits/49668
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://github.com/plone/Products.CMFPlone/issues/3255

Scores

CVSS v3 5.4
EPSS 0.0031
EPSS Percentile 54.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (2)
plone/plone 5.2.3
pypi/plone 0PyPI
Published Mar 24, 2021
Tracked Since Feb 18, 2026