PT-2021-14266 · Unknown · Movable Type Advanced+1

Published 2021-08-26 · Updated 2021-09-01 · CVE-2021-20812

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Movable Type Advanced versions 7.0.0 through 7 r.4903 Movable Type Premium Advanced versions 1.0.0 through 1.44

Description: A cross-site scripting issue in the Setting screen of Server Sync of Movable Type allows remote attackers to inject arbitrary script or HTML via unspecified vectors.

Recommendations: For Movable Type Advanced versions 7.0.0 through 7 r.4903, update to a version later than 7 r.4903 to resolve the issue. For Movable Type Premium Advanced versions 1.0.0 through 1.44, update to a version later than 1.44 to resolve the issue. As a temporary workaround, consider restricting access to the Setting screen of Server Sync to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-20812

Affected Products

Movable Type Advanced

Movable Type Premium Advanced

References · 6

• https://movabletype.org/news/2021/08/mt-780-681-released.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-20812 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-20812 · Security Note
• https://jvn.jp/en/jp/JVN97545738/index.html · Note
• https://t.me/cvenotify/20529 · Telegram Post
• https://t.me/cvenotify/20148 · Telegram Post