PyPi: Plone

CVE-2021-33511

Safety vulnerability ID: 40536

This vulnerability was reviewed by experts

The information on this page was manually curated by our Cybersecurity Intelligence Team.

Created at May 21, 2021 Updated at Mar 27, 2025

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Advisory

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.

Affected package

plone

Latest version: 6.1.1

The Plone Content Management System

Affected versions

Fixed versions

Vulnerability changelog

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. See CVE-2021-33511.

MISC:https://plone.org/security/hotfix/20210518/server-side-request-forgery-via-lxml-parser: https://plone.org/security/hotfix/20210518/server-side-request-forgery-via-lxml-parser

Resources

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Severity Details

CVSS Base Score

HIGH 7.5

CVSS v3 Details

HIGH 7.5

Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality Impact (C): HIGH
Integrity Impact (I): NONE
Availability Availability (A): NONE

CVSS v2 Details

MEDIUM 5.0

Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (Au): NONE
Confidentiality Impact (C): PARTIAL
Integrity Impact (I): NONE
Availability Impact (A): NONE