CVE-2021-20808: XSS
First published: Thu Aug 26 2021(Updated: )
Cross-site scripting vulnerability in Search screen 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 CVE-2021-20808?
CVE-2021-20808 is a cross-site scripting vulnerability in the Search screen of Movable Type, affecting versions 7 r.4903 and earlier (Movable Type 7 Series), 6.8.0 and earlier (Movable Type 6 Series), Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series), and Premium 1.44 and earlier.
What is the severity of CVE-2021-20808?
CVE-2021-20808 has a severity score of 6.1, which is considered medium.
How does CVE-2021-20808 affect Sixapart Movable Type?
CVE-2021-20808 affects Sixapart Movable Type versions 7 r.4903 and earlier (Movable Type 7 Series), 6.8.0 and earlier (Movable Type 6 Series), Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series), and Premium 1.44 and earlier.
What is the Common Weakness Enumeration (CWE) ID for CVE-2021-20808?
The Common Weakness Enumeration (CWE) ID for CVE-2021-20808 is CWE-79.
How can I fix the cross-site scripting vulnerability CVE-2021-20808?
To fix the cross-site scripting vulnerability CVE-2021-20808, users should upgrade to Movable Type versions 7.8.0 or 6.8.1 or apply the patches provided by Sixapart.
- collector/nvd-index
- agent/weakness
- agent/tags
- agent/event
- agent/type
- agent/references
- agent/severity
- agent/author
- agent/description
- agent/last-modified-date
- agent/first-publish-date
- agent/softwarecombine
- 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