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CVE-2021-33511

Good to know:

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Date: May 21, 2021

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.

Language: Python

Severity Score

Related Resources (7)

https://plone.org/security/hotfix/20210518/server-side-request-forgery-via-lxml-parser
https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2021-83.yaml
https://github.com/advisories/GHSA-gc9g-67cq-p7v4
https://nvd.nist.gov/vuln/detail/CVE-2021-33511
http://www.openwall.com/lists/oss-security/2021/05/22/1
https://github.com/plone/Plone
https://www.mend.io/vulnerability-database/CVE-2021-33511

Severity Score

Weakness Type (CWE)

Server-Side Request Forgery (SSRF)

CWE-918

Top Fix

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CVSS v3.1

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

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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