XSS in Plone
CVE-2021-29002
A stored cross-site scripting (XSS) vulnerability in Plone CMS 5.2.3 exists in site-controlpanel via the "form.widgets.site_title" parameter.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.008 (53.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: -0.000
Affected products
- Plone — versions 5.2.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.exploit-db.com/exploits/49668 (Exploit, VDB Entry, Third Party Advisory)
- github.com/plone/Products.CMFPlone/issues/3255 (Exploit, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2021-29002?
- CVE-2021-29002 is a medium-severity vulnerability in Plone, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-03-24.
- How severe is CVE-2021-29002?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2021-29002 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.