CVE-2021-20815

Cross-site scripting vulnerability in Edit Boilerplate 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.

• CWE-79

• https://jvn.jp/en/jp/JVN97545738/index.htmlThird Party Advisory
• https://movabletype.org/news/2021/08/mt-780-681-released.htmlRelease Notes, Vendor Advisory
• https://jvn.jp/en/jp/JVN97545738/index.htmlThird Party Advisory
• https://movabletype.org/news/2021/08/mt-780-681-released.htmlRelease Notes, Vendor Advisory

Published

Aug 26, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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