VULNERABILITY INTELLIGENCE

CVE-2021-33511

CVSS score7.5 HIGH

EPSS probability1.16%

CISA KEVNot currently listed

Published2021-05-21

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Description

Plone though 5.2.4 allows SSRF via the lxml parser. This affects Diazo themes, Dexterity TTW schemas, and modeleditors in plone.app.theming, plone.app.dexterity, and plone.supermodel.

Weakness classification

CWE-918: Server-Side Request Forgery (SSRF)

Primary references

cve@mitre.org — Mailing List, Third Party Advisory
cve@mitre.org — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory