CVE-2021-20813 — MEDIUM (6.1)

Q: How severe is CVE-2021-20813?

CVE-2021-20813 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2021-20813?

Check the references section above for vendor advisories and patch information. Affected products include: Sixapart Movable Type.

Vulnerability Description

Cross-site scripting vulnerability in Edit screen of Content Data of Movable Type (Movable Type 7 r.4903 and earlier (Movable Type 7 Series) and Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series)) allows remote attackers to inject arbitrary script or HTML via unspecified vectors.

CVSS Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Sixapart	Movable Type	>= 7.0, < 7.8.0

Related Weaknesses (CWE)

CWE-79

References

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

FAQ

What is CVE-2021-20813?

CVE-2021-20813 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Cross-site scripting vulnerability in Edit screen of Content Data of Movable Type (Movable Type 7 r.4903 and earlier (Movable Type 7 Series) and Movable Type Advanced 7 r.4903 and earlier (Movable Typ...

How severe is CVE-2021-20813?

CVE-2021-20813 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20813?

Check the references section above for vendor advisories and patch information. Affected products include: Sixapart Movable Type.