What is the CVSS score of CVE-2021-20691?

CVE-2021-20691 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%.

Yomi Search CVE-2021-20691

MEDIUM

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

2021-04-07 vultures@jpcert.or.jp

XSS Yomi Search

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

Apr 07, 2021 - 08:15 nvd

MEDIUM 6.1

DescriptionNVD

Cross-site scripting vulnerability in Yomi-Search Ver4.22 allows remote attackers to inject an arbitrary script via unspecified vectors.

AnalysisAI

Cross-site scripting vulnerability in Yomi-Search Ver4.22 allows remote attackers to inject an arbitrary script via unspecified vectors. 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 Yomi-Search Ver4.22 allows remote attackers to inject an arbitrary script via unspecified vectors. Affected products include: Yomi-Search Project Yomi-Search.

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.