cve.bz

CVE-2020-28734

8.8 highEPSS 1.5%

High (8.8) in plone plone. EPSS 1.5% chance of exploitation in the next 30 days. Fixed in plone 5.2.3.

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

Severity

CVSS 3.1

8.8 high
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
1.5% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)
CWE
CWE-611
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-wq6x-g685-w5f2PyPIplone<5.2.35.2.3
GHSA-wq6x-g685-w5f2PyPIplone-app-event<3.2.103.2.10
GHSA-wq6x-g685-w5f2PyPIplone-app-theming<4.1.64.1.6
GHSA-wq6x-g685-w5f2PyPIplone-app-dexterity<2.6.82.6.8
GHSA-wq6x-g685-w5f2PyPIplone-supermodel<1.6.31.6.3
PYSEC-2020-246PyPIplone<5.2.35.2.3
PYSEC-2026-2880PyPIplone-app-dexterity<2.6.82.6.8
PYSEC-2026-2883PyPIplone-app-event<3.2.103.2.10
PYSEC-2026-2886PyPIplone-app-theming<4.1.64.1.6
PYSEC-2026-736PyPIplone-supermodel<1.6.31.6.3

References

Check your stackJSON