CVE-2021-20809: XSS
First published: Thu Aug 26 2021(Updated: )
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.
Credit: vultures@jpcert.or.jp
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Sixapart Movable Type | <=1.44 | |
| Sixapart Movable Type | <=1.44 | |
| Sixapart Movable Type | >=6.0<=6.8.0 | |
| Sixapart Movable Type | >=7.0<7.8.0 | |
| Sixapart Movable Type | >=7.0<7.8.0 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this vulnerability?
The vulnerability ID is CVE-2021-20809.
What is the severity level of CVE-2021-20809?
The severity level of CVE-2021-20809 is medium.
What software versions are affected by CVE-2021-20809?
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), and Movable Type Advanced 7 R.4002 and earlier (Movable Type Advanced 6 Series) are affected by CVE-2021-20809.
How can I fix CVE-2021-20809?
Upgrade to Movable Type 7.8.0, 6.8.1, 5.2.13, or the latest stable version from the official Movable Type website.
Where can I find more information about CVE-2021-20809?
You can find more information about CVE-2021-20809 at the official Movable Type website and the JVN website.
- collector/nvd-index
- agent/references
- agent/weakness
- agent/severity
- agent/author
- agent/tags
- agent/type
- agent/event
- agent/description
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- collector/mitre-cve
- source/MITRE
- vendor/sixapart
- canonical/sixapart movable type
- version/sixapart movable type/1.44
- version/sixapart movable type/6.0
- version/sixapart movable type/6.8.0
- version/sixapart movable type/7.0