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Vulnerability details: VCID-basq-jjsf-3fbd
Vulnerability ID VCID-basq-jjsf-3fbd
Aliases CVE-2021-3313
PYSEC-2021-78
Summary Plone CMS until version 5.2.4 has a stored Cross-Site Scripting (XSS) vulnerability in the user fullname property and the file upload functionality. The user's input data is not properly encoded when being echoed back to the user. This data can be interpreted as executable code by the browser and allows an attacker to execute JavaScript in the context of the victim's browser if the victim opens a vulnerable page containing an XSS payload.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
There are no known severity scores.
Reference id Reference type URL
https://plone.org/download/releases/5.2.3
https://plone.org/security/hotfix/20210518
https://www.compass-security.com/fileadmin/Research/Advisories/2021-07_CSNC-2021-013_XSS_in_Plone_CMS.txt
http://www.openwall.com/lists/oss-security/2021/05/22/1
No exploits are available.
There are no known vectors.

No EPSS data available for this vulnerability.

Date Actor Action Source VulnerableCode Version
2026-06-02T04:13:51.808852+00:00 Pypa Importer Import https://github.com/pypa/advisory-database/blob/main/vulns/plone/PYSEC-2021-78.yaml 38.6.0