Home/CVE/Plone before 5.2.3 allows XXE attacks via a feature that is explicitly only available to the Manager role.
CVE

CVE-2020-28734

Plone before 5.2.3 allows XXE attacks via a feature that is explicitly only available to the Manager role.

Plone before 5.2.3 allows XXE attacks via a feature that is explicitly only available to the Manager role.

HIGH · CVSS 8.8 EPSS 0.00484
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-611Improper Restriction of XML External Entity Reference
▤

Affected Products & Versions

1
plone< 5.2.3
▤

Affected Packages

5
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
PyPI plone HIGH fixed in 5.2.3
PyPI plone-app-dexterity HIGH fixed in 2.6.8
PyPI plone-app-event HIGH fixed in 3.2.10
PyPI plone-app-theming HIGH fixed in 4.1.6
PyPI plone-supermodel HIGH fixed in 1.6.3
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Dec 2020 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://dist.plone.org/release/5.2.3/RELEASE-NOTES.txtRelease NotesVendor Advisory
https://github.com/plone/Products.CMFPlone/issues/3209PatchThird Party Advisory
https://www.misakikata.com/codes/plone/python-en.htmlBroken Link
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