Mermaid
CVE-2021-35513
MEDIUM
Severity by source
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
Lifecycle Timeline
1Blast Radius
ecosystem impact- 1 npm packages depend on mermaid (1 direct, 0 indirect)
Ecosystem-wide dependent count for version 8.11.0.
DescriptionNVD
Mermaid before 8.11.0 allows XSS when the antiscript feature is used.
AnalysisAI
Mermaid before 8.11.0 allows XSS when the antiscript feature is used. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
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. Mermaid before 8.11.0 allows XSS when the antiscript feature is used. Affected products include: Mermaid Project Mermaid. Version information: before 8.11.0.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer
Mermaid is a Javascript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer
Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
Leaving vuln.today