SSRF attacks via tracebacks in Plone
Plone before 5.2.3 allows SSRF attacks via the tracebacks feature (only available to the Manager role).
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | plone | < 5.2.3 | 5.2.3 |
| Python (PyPI) | plone-app-dexterity | < 2.6.8 | 2.6.8 |
| Python (PyPI) | plone-app-event | < 3.2.10 | 3.2.10 |
| Python (PyPI) | plone-app-theming | < 4.1.6 | 4.1.6 |
| Python (PyPI) | plone-supermodel | < 1.6.3 | 1.6.3 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-28735
- https://github.com/plone/Products.CMFPlone/issues/3209
- https://dist.plone.org/release/5.2.3/RELEASE-NOTES.txt
- https://github.com/advisories/GHSA-x7wf-5mjc-6x76
- https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2020-247.yaml
- https://www.misakikata.com/codes/plone/python-en.html
- https://pypi.org/project/plone-app-dexterity
- https://pypi.org/project/plone-app-event
- https://pypi.org/project/plone-app-theming
- https://pypi.org/project/plone-supermodel
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-918- Platform
- Python (PyPI)
- Package
plone, plone-app-dexterity, plone-app-event- Disclosed
- 30.12.2020
- Updated
- 11.10.2026 14:18
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2020-247 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-2881 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-2884 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-2887 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-x7wf-5mjc-6x76 - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-737 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: plone-app-dexterity
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 12.2020 09.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 3
- Medium 1
Disclosures per year
- 2020: 3
- 2021: 0
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 1
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