# mermaid (npm) vulnerabilities Source: https://junglewise.ai/threats/technologies/mermaid Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/mermaid.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 16 vulnerabilities in mermaid (npm): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-71439, was published on 6 August 2026. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 0 - All time: 16 (0 critical, 0 exploited in the wild) ## About mermaid (npm) JavaScript library for creating diagrams and flowcharts from markdown-like syntax. ## Latest mermaid (npm) vulnerabilities - [CVE-2026-71439: Mermaid radar diagrams denial of service via unchecked ticks input](https://junglewise.ai/threats/cve-2026-71439-mermaid-radar-diagrams-denial-of-service-via-unchecked-ticks) (medium, CVSS 4, published 6 Aug 2026) - [CVE-2026-71438: Mermaid prototype pollution in configuration APIs](https://junglewise.ai/threats/cve-2026-71438-mermaid-prototype-pollution-in-configuration-apis) (medium, CVSS 4, published 6 Aug 2026) - [CVE-2026-71437: Mermaid prototype pollution in architecture-beta diagrams](https://junglewise.ai/threats/cve-2026-71437-mermaid-prototype-pollution-in-architecture-beta-diagrams) (medium, CVSS 4, published 6 Aug 2026) - [CVE-2026-71436: Mermaid infinite loop in XY Charts axis processing](https://junglewise.ai/threats/cve-2026-71436-mermaid-infinite-loop-in-xy-charts-axis-processing) (medium, CVSS 4, published 6 Aug 2026) - [CVE-2026-50159: Mermaid CSS injection via sibling combinators](https://junglewise.ai/threats/cve-2026-50159-mermaid-css-injection-via-sibling-combinators) (medium, CVSS 4, published 6 Aug 2026) - [CVE-2026-41159: Mermaid CSS injection via configuration options](https://junglewise.ai/threats/cve-2026-41159-mermaid-css-injection-via-configuration-options) (medium, CVSS 4, published 29 May 2026) - [CVE-2026-41150: Mermaid infinite loop denial of service in Gantt charts](https://junglewise.ai/threats/cve-2026-41150-mermaid-infinite-loop-denial-of-service-in-gantt-charts) (medium, CVSS 5.3, published 29 May 2026) - [CVE-2026-41149: Mermaid HTML injection in state diagram classDef](https://junglewise.ai/threats/cve-2026-41149-mermaid-html-injection-in-state-diagram-classdef) (medium, CVSS 4, published 22 May 2026) - [CVE-2026-41148: Mermaid CSS injection in class definitions](https://junglewise.ai/threats/cve-2026-41148-mermaid-css-injection-in-class-definitions) (medium, CVSS 4, published 22 May 2026) - [CVE-2025-54881: Mermaid XSS in sequence diagram labels](https://junglewise.ai/threats/cve-2025-54881-mermaid-xss-in-sequence-diagram-labels) (medium, CVSS 4, published 19 Aug 2025) - [CVE-2025-54880: Mermaid improper sanitization of architecture diagram iconText leading to XSS](https://junglewise.ai/threats/cve-2025-54880-mermaid-improper-sanitization-of-architecture-diagram-icontext) (medium, CVSS 4, published 19 Aug 2025) - [Mermaid prototype pollution in bundled DOMPurify](https://junglewise.ai/threats/mermaid-prototype-pollution-in-bundled-dompurify-655b89f2) (low, CVSS 3.1, published 22 Oct 2024) - [CVE-2022-31108: Mermaid.js CSS injection via theme variables](https://junglewise.ai/threats/cve-2022-31108-mermaid-js-css-injection-via-theme-variables) (low, CVSS 3.1, published 5 Jul 2022) - [CVE-2021-43861: Mermaid incorrect sanitization leading to XSS](https://junglewise.ai/threats/cve-2021-43861-mermaid-incorrect-sanitization-leading-to-xss) (low, CVSS 3.1, published 6 Jan 2022) - [CVE-2021-35513: Mermaid cross-site scripting in antiscript feature](https://junglewise.ai/threats/cve-2021-35513-mermaid-cross-site-scripting-in-antiscript-feature) (low, CVSS 3.1, published 10 Dec 2021) - [mermaid cross-site scripting in diagram rendering](https://junglewise.ai/threats/mermaid-cross-site-scripting-in-diagram-rendering-f7b8e44e) (info, published 2 Sep 2020) ## Most severe mermaid (npm) vulnerabilities - [CVE-2026-41150: Mermaid infinite loop denial of service in Gantt charts](https://junglewise.ai/threats/cve-2026-41150-mermaid-infinite-loop-denial-of-service-in-gantt-charts) (medium, CVSS 5.3, published 29 May 2026) - [CVE-2025-54881: Mermaid XSS in sequence diagram labels](https://junglewise.ai/threats/cve-2025-54881-mermaid-xss-in-sequence-diagram-labels) (medium, CVSS 4, published 19 Aug 2025) - [CVE-2026-50159: Mermaid CSS injection via sibling combinators](https://junglewise.ai/threats/cve-2026-50159-mermaid-css-injection-via-sibling-combinators) (medium, CVSS 4, published 6 Aug 2026) - [CVE-2026-41148: Mermaid CSS injection in class definitions](https://junglewise.ai/threats/cve-2026-41148-mermaid-css-injection-in-class-definitions) (medium, CVSS 4, published 22 May 2026) - [CVE-2026-71436: Mermaid infinite loop in XY Charts axis processing](https://junglewise.ai/threats/cve-2026-71436-mermaid-infinite-loop-in-xy-charts-axis-processing) (medium, CVSS 4, published 6 Aug 2026) - [CVE-2026-41159: Mermaid CSS injection via configuration options](https://junglewise.ai/threats/cve-2026-41159-mermaid-css-injection-via-configuration-options) (medium, CVSS 4, published 29 May 2026) - [CVE-2026-71439: Mermaid radar diagrams denial of service via unchecked ticks input](https://junglewise.ai/threats/cve-2026-71439-mermaid-radar-diagrams-denial-of-service-via-unchecked-ticks) (medium, CVSS 4, published 6 Aug 2026) - [CVE-2026-41149: Mermaid HTML injection in state diagram classDef](https://junglewise.ai/threats/cve-2026-41149-mermaid-html-injection-in-state-diagram-classdef) (medium, CVSS 4, published 22 May 2026) - [CVE-2026-71437: Mermaid prototype pollution in architecture-beta diagrams](https://junglewise.ai/threats/cve-2026-71437-mermaid-prototype-pollution-in-architecture-beta-diagrams) (medium, CVSS 4, published 6 Aug 2026) - [CVE-2025-54880: Mermaid improper sanitization of architecture diagram iconText leading to XSS](https://junglewise.ai/threats/cve-2025-54880-mermaid-improper-sanitization-of-architecture-diagram-icontext) (medium, CVSS 4, published 19 Aug 2025) ## Vulnerabilities per week Nothing was published in the last eight weeks. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other npm technologies - [openclaw (npm)](https://junglewise.ai/threats/technologies/npm-openclaw): 214 vulnerabilities - [flowise (npm)](https://junglewise.ai/threats/technologies/flowise): 133 vulnerabilities - [parse-server (npm)](https://junglewise.ai/threats/technologies/parse-server): 117 vulnerabilities - [vm2 (npm)](https://junglewise.ai/threats/technologies/vm2): 111 vulnerabilities - [electron (npm)](https://junglewise.ai/threats/technologies/electron): 77 vulnerabilities - [ghost (npm)](https://junglewise.ai/threats/technologies/ghost): 74 vulnerabilities - [n8n (npm)](https://junglewise.ai/threats/technologies/npm-n8n): 64 vulnerabilities - [hono (npm)](https://junglewise.ai/threats/technologies/hono): 62 vulnerabilities - [directus (npm)](https://junglewise.ai/threats/technologies/directus): 61 vulnerabilities - [nocodb (npm)](https://junglewise.ai/threats/technologies/nocodb): 54 vulnerabilities - [undici (npm)](https://junglewise.ai/threats/technologies/undici): 53 vulnerabilities - [@budibase/server (npm)](https://junglewise.ai/threats/technologies/budibase-server): 42 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "mermaid (npm) vulnerabilities", https://junglewise.ai/threats/technologies/mermaid, 13 November 2026.