GHSA-hprr-4vfq-fcxw
Plone XSS in User Fullname Property and File Upload
Packages
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2021-3313
- https://github.com/plone/Plone
- https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2021-78.yaml
- https://plone.org/download/releases/5.2.3
- https://plone.org/security/hotfix/20210518
- https://plone.org/security/hotfix/20210518/stored-xss-from-file-upload-svg-html
- https://plone.org/security/hotfix/20210518/stored-xss-from-user-fullname
- 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