Medium severity6.1NVD Advisory· Published Aug 26, 2021· Updated Jun 17, 2026
CVE-2021-20812
CVE-2021-20812
Description
Cross-site scripting vulnerability in Setting screen of Server Sync of Movable Type (Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series) and Movable Type Premium Advanced 1.44 and earlier) allows remote attackers to inject arbitrary script or HTML via unspecified vectors.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4cpe:2.3:a:sixapart:movable_type:*:*:*:*:advanced:*:*:*+ 1 more
- cpe:2.3:a:sixapart:movable_type:*:*:*:*:advanced:*:*:*range: >=7.0,<7.8.0
- cpe:2.3:a:sixapart:movable_type:*:*:*:*:premium_advanced:*:*:*range: <=1.44
- Range: <=7 r.4903
- Six Apart Ltd./Movable Typev5Range: Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series) and Movable Type Premium Advanced 1.44 and earlier
Patches
Vulnerability mechanics
References
2- jvn.jp/en/jp/JVN97545738/index.htmlnvdThird Party Advisory
- movabletype.org/news/2021/08/mt-780-681-released.htmlnvdRelease NotesVendor Advisory
News mentions
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