Is CVE-2021-3313 actively exploited?

CVE-2021-3313 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2021-3313?

CVE-2021-3313 has a CVSS score of 5.4 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

How do I patch CVE-2021-3313?

Patch guidance is available from plone security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-3313.

CVE-2021-3313 - remediation guidance & executive summary

Description

Plone CMS until version 5.2.4 has a stored Cross-Site Scripting (XSS) vulnerability in the user fullname property and the file upload functionality. The user's input data is not properly encoded when being echoed back to the user. This data can be interpreted as executable code by the browser and allows an attacker to execute JavaScript in the context of the victim's browser if the victim opens a vulnerable page containing an XSS payload.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector: network
Complexity: low
Privileges: low
User Action: required
Scope: changed
Confidentiality: low
Integrity: low
Availability: none
Weaknesses: CWE-79 · Cross-site Scripting (XSS)

Metadata

Primary Vendor: PLONE
Published: 5/20/2021
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2021-3313

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary