Plone before 5.2.3 allows SSRF attacks via the tracebacks feature (only available to the Manager role).
Priority MEDIUM 41CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
Plone before 5.2.3 allows SSRF attacks via the tracebacks feature (only available to the Manager role).
Why it matters now
EPSS 0.01453 73rd percentileScored 2026-11-07
Fix Fixed Plone (PyPI): 5.2.3plone.app.event (PyPI): 3.2.10+3 more products
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) | before 5.2.3 | 5.2.3 | Patch available | GHSA-x7wf-5mjc-6x76 |
| — | plone.app.event (PyPI) | before 3.2.10 | 3.2.10 | Patch available | GHSA-x7wf-5mjc-6x76 |
| — | plone.app.theming (PyPI) | before 4.1.6 | 4.1.6 | Patch available | GHSA-x7wf-5mjc-6x76 |
| — | plone.app.dexterity (PyPI) | before 2.6.8 | 2.6.8 | Patch available | GHSA-x7wf-5mjc-6x76 |
| — | plone.supermodel (PyPI) | before 1.6.3 | 1.6.3 | Patch available | GHSA-x7wf-5mjc-6x76 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- Plone (PyPI) Vendor— Affected before 5.2.3 Fixed in 5.2.3 Patch available GHSA-x7wf-5mjc-6x76
- plone.app.event (PyPI) Vendor— Affected before 3.2.10 Fixed in 3.2.10 Patch available GHSA-x7wf-5mjc-6x76
- plone.app.theming (PyPI) Vendor— Affected before 4.1.6 Fixed in 4.1.6 Patch available GHSA-x7wf-5mjc-6x76
- plone.app.dexterity (PyPI) Vendor— Affected before 2.6.8 Fixed in 2.6.8 Patch available GHSA-x7wf-5mjc-6x76
- plone.supermodel (PyPI) Vendor— Affected before 1.6.3 Fixed in 1.6.3 Patch available GHSA-x7wf-5mjc-6x76
Remediation
- Fix · GHSA-x7wf-5mjc-6x76 Plone (PyPI) Fixed in 5.2.3 Advisory →
- Fix · GHSA-x7wf-5mjc-6x76 plone.app.event (PyPI) Fixed in 3.2.10 Advisory →
- Fix · GHSA-x7wf-5mjc-6x76 plone.app.theming (PyPI) Fixed in 4.1.6 Advisory →
- Fix · GHSA-x7wf-5mjc-6x76 plone.app.dexterity (PyPI) Fixed in 2.6.8 Advisory →
- Fix · GHSA-x7wf-5mjc-6x76 plone.supermodel (PyPI) Fixed in 1.6.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2020-28735
- 2026-10-03 Alias added: GHSA-x7wf-5mjc-6x76
References
Advisory 3
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-2020-28735 · CVE Program
- CVE-2020-28735 · NVD
- FIRST EPSS
- GHSA-x7wf-5mjc-6x76 · GitHub Advisory Database · CC BY 4.0
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