What is the CVSS score of CVE-2021-20743?

CVE-2021-20743 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.8%.

Email Newsletters Management CVE-2021-20743

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2021-06-22 vultures@jpcert.or.jp

XSS Email Newsletters Management

6.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.1 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Lifecycle Timeline

CVE Published

Jun 22, 2021 - 02:15 nvd

MEDIUM 6.1

DescriptionNVD

Cross-site scripting vulnerability in EC-CUBE Email newsletters management plugin (for EC-CUBE 3.0 series) versions prior to version 1.0.4 allows a remote attacker to inject an arbitrary script by leading a user to a specially crafted page and to perform a specific operation.

AnalysisAI

Cross-site scripting vulnerability in EC-CUBE Email newsletters management plugin (for EC-CUBE 3.0 series) versions prior to version 1.0.4 allows a remote attacker to inject an arbitrary script by. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Cross-site scripting vulnerability in EC-CUBE Email newsletters management plugin (for EC-CUBE 3.0 series) versions prior to version 1.0.4 allows a remote attacker to inject an arbitrary script by leading a user to a specially crafted page and to perform a specific operation. Affected products include: Ec-Cube Email Newsletters Management. Version information: version 1.0.4.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.