A stored cross-site scripting (XSS) vulnerability in Plone CMS 5.2.3 exists in…
Priority LOW 26CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
A stored cross-site scripting (XSS) vulnerability in Plone CMS 5.2.3 exists in site-controlpanel via the "form.widgets.site_title" parameter.
Why it matters now
EPSS 0.00759 55th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | plone (PyPI) | up to 5.2.3 | — | No fix listed | GHSA-38g6-x6jv-jwff |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- plone (PyPI) Vendor— Affected up to 5.2.3 Fixed in — No fix listed GHSA-38g6-x6jv-jwff
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-29002
- 2026-10-03 Alias added: GHSA-38g6-x6jv-jwff
References
More Plone vulnerabilities
- TI-2011-03162 Unspecified vulnerability in Zope 2.12.x and 2.13.x, as used in Plone 4.0.x through… CVSS 2.0HIGH 9.3
- TI-2021-13226 An issue in Plone CMS v. CVSS 3.1HIGH 8.8
- TI-2024-15757 The HTTP PUT and DELETE methods are enabled in the Plone official Docker version 5.2.13… CVSS 3.1HIGH 7.5
- TI-2021-12911 Plone through 5.2.4 allows remote authenticated managers to perform disk I/O via crafted… CVSS 3.1CRITICAL 9.9
- TI-2020-17872 The official plone Docker images before version of 4.3.18-alpine (Alpine specific)… CVSS 3.1CRITICAL 9.8
- TI-2020-06422 A privilege escalation issue in plone.app.contenttypes in Plone 4.3 through 5.2.1 allows… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-29002 · CVE Program
- CVE-2021-29002 · NVD
- FIRST EPSS
- GHSA-38g6-x6jv-jwff · GitHub Advisory Database · CC BY 4.0
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