Stored Cross-Site Scripting Vulnerability in Plone CMS by Plone Foundation
CVE-2021-3313

5.4MEDIUM

Key Information:

Vendor

Plone

Status
Plone
Vendor
CVE Published:
20 May 2021

What is CVE-2021-3313?

The Plone CMS is susceptible to a stored Cross-Site Scripting (XSS) vulnerability affecting versions up to 5.2.4. An attacker can exploit this vulnerability through the user fullname property and file upload functionality, where user input data is improperly encoded and subsequently rendered as executable code by the browser. This enables attackers to execute malicious JavaScript within the context of the victim's browser, particularly when the victim accesses a compromised page containing an XSS payload.

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References

https://plone.org/download/releases/5.2.3
x_refsource_MISC
https://www.compass-security.com/fileadmin/Research/Advis...
x_refsource_MISC
https://plone.org/security/hotfix/20210518
x_refsource_MISC

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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