CVE-2021-20811

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Cross-site scripting vulnerability in List of Assets 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.

Una vulnerabilidad de tipo cross-site scripting en la pantalla List of Assets de Movable Type (Movable Type 7 versiones r.4903 y anteriores (Movable Type 7 Series), Movable Type versiones 6.8.0 y anteriores (Movable Type 6 Series), Movable Type Advanced 7 versiones r.4903 y anteriores (Movable Type Advanced 7 Series), Movable Type Premium versiones 1.44 y anteriores, y Movable Type Premium Advanced versiones 1.44 y anteriores), permite a atacantes remotos inyectar script arbitrario o HTML por medio de vectores no especificados.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-17 CVE Reserved
2021-08-26 CVE Published
2024-08-03 CVE Updated
2024-08-29 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (2)

URL	Tag	Source
https://jvn.jp/en/jp/JVN97545738/index.html	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://movabletype.org/news/2021/08/mt-780-681-released.html	2021-09-01

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Sixapart Search vendor "Sixapart"		Movable Type Search vendor "Sixapart" for product "Movable Type"				<= 1.44 Search vendor "Sixapart" for product "Movable Type" and version " <= 1.44"		premium		Affected
Sixapart Search vendor "Sixapart"		Movable Type Search vendor "Sixapart" for product "Movable Type"				<= 1.44 Search vendor "Sixapart" for product "Movable Type" and version " <= 1.44"		premium_advanced		Affected
Sixapart Search vendor "Sixapart"		Movable Type Search vendor "Sixapart" for product "Movable Type"				>= 6.0 <= 6.8.0 Search vendor "Sixapart" for product "Movable Type" and version " >= 6.0 <= 6.8.0"		-		Affected
Sixapart Search vendor "Sixapart"		Movable Type Search vendor "Sixapart" for product "Movable Type"				>= 7.0 < 7.8.0 Search vendor "Sixapart" for product "Movable Type" and version " >= 7.0 < 7.8.0"		-		Affected
Sixapart Search vendor "Sixapart"		Movable Type Search vendor "Sixapart" for product "Movable Type"				>= 7.0 < 7.8.0 Search vendor "Sixapart" for product "Movable Type" and version " >= 7.0 < 7.8.0"		advanced		Affected