CVE-2020-5528

Description

Cross-site scripting vulnerability in Movable Type series (Movable Type 7 r.4603 and earlier (Movable Type 7), Movable Type 6.5.2 and earlier (Movable Type 6.5), Movable Type Advanced 7 r.4603 and earlier (Movable Type Advanced 7), Movable Type Advanced 6.5.2 and earlier (Movable Type Advanced 6.5), Movable Type Premium 1.26 and earlier (Movable Type Premium), and Movable Type Premium Advanced 1.26 and earlier (Movable Type Premium Advanced)) allows remote attackers to inject arbitrary web script or HTML in the block editor and the rich text editor via a specially crafted URL.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.43%
Third-Party Advisory jvn.jp Third-Party Advisory movabletype.org
Affected: Six Apart Ltd Movable Type series
Published at:
Updated at:

References

Link Tags
https://movabletype.org/news/2020/02/movable_type_r4605_v720_v653_and_v6311_released.html third party advisory
http://jvn.jp/en/jp/JVN94435544/index.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-5528?
CVE-2020-5528 has been scored as a medium severity vulnerability.
How to fix CVE-2020-5528?
To fix CVE-2020-5528, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-5528 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-5528 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-5528?
CVE-2020-5528 affects Six Apart Ltd Movable Type series.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.