Is CVE-2021-20809 actively exploited?

CVE-2021-20809 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2021-20809?

CVE-2021-20809 has a CVSS score of 6.1 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

How do I patch CVE-2021-20809?

Patch guidance is available from sixapart security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-20809.

CVE-2021-20809 - remediation guidance & executive summary

Q: Which products are affected by CVE-2021-20809?

5 products: sixapart movable type, sixapart movable type, sixapart movable type, sixapart movable type, sixapart movable type.

Description

Cross-site scripting vulnerability in Create screens of Entry, Page, and Content Type of Movable Type (Movable Type 7 r.4903 and earlier (Movable Type 7 Series), Movable Type 6.8.0 and earlier (Movable Type 6 Series), Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series), Movable Type Premium 1.44 and earlier, and Movable Type Premium Advanced 1.44 and earlier) allows remote attackers to inject arbitrary script or HTML via unspecified vectors.

CVSS Metrics

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

Metadata

Primary Vendor: SIXAPART
Published: 8/26/2021
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

sixapart : movable_typesixapart : movable_typesixapart : movable_typesixapart : movable_typesixapart : movable_type

Remediation Guidance

Executive Summary

View on NIST NVD