Cross-site Scripting in Movable Type Makes It Vulnerable to Attacks
CVE-2021-20813

6.1MEDIUM

Key Information:

Vendor

Six Apart Ltd.

Status
Movable Type
Vendor
CVE Published:
26 August 2021

What is CVE-2021-20813?

A cross-site scripting vulnerability exists in the Edit screen of Content Data within Movable Type and Movable Type Advanced. This flaw allows remote attackers to inject arbitrary scripts or HTML into the affected platforms through unspecified vectors, potentially compromising user data and application integrity. Users of versions before 7 r.4903 are advised to update their systems to mitigate the risk associated with this vulnerability.

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Affected Version(s)

Movable Type Movable Type 7 r.4903 and earlier (Movable Type 7 Series) and Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series)

References

https://movabletype.org/news/2021/08/mt-780-681-released....
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https://jvn.jp/en/jp/JVN97545738/index.html
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CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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