CVE-2021-20665

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-03-05 · updated 2026-06-17
Weakness: CWE-79

Description

Cross-site scripting vulnerability in in Add asset screen of Contents field of Movable Type 7 r.4705 and earlier (Movable Type 7 Series), Movable Type Advanced 7 r.4705 and earlier (Movable Type Advanced 7 Series), Movable Type Premium 1.39 and earlier, and Movable Type Premium Advanced 1.39 and earlier allows remote attackers to inject an arbitrary script via unspecified vectors.

Affected products

Movabletype Movable Type: through 7.4705
Movabletype Movable Type Advanced: through 7.4705
Movabletype Movable Type Premium: through 1.39
Movabletype Movable Type Premium Advanced: through 1.39

References

https://jvn.jp/en/jp/JVN66542874/index.html
https://movabletype.org/news/2021/02/mt-760-676-released.html
https://jvn.jp/en/jp/JVN66542874/index.html
https://movabletype.org/news/2021/02/mt-760-676-released.html

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