CVE-2026-41149: falha de média gravidade em mermaid-js mermaid
Mermaid: Improper sanitization of `classDef` in state diagrams leads to HTML injection
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 5.3epss 0.4%
Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versions 10.9.5 and earlier, as well as 11.0.0-alpha.1 through 11.14.0, are vulnerable to HTML injection under the default configuration. Specifically, the classDef directive in Mermaid state diagrams permits DOM injection that escapes the SVG context. However, <script> tags are stripped, which prevents cross-site scripting (XSS). This issue has been fixed in versions 10.9.6 and 11.15.0. If developers are unable to immediately upgrade, they can work around this issue by setting "securityLevel": "sandbox", which prevents the issue by rendering the mermaid diagram in a sandboxed <iframe>.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
Produtos afetados
mermaid-js · mermaidCVEs relacionadas — mermaid-js mermaid
No mesmo produto, das mais perigosas para as menos.
CVE-2021-43861HIGHIncorrect sanitisation function leads to `XSS`EPSS 0.9%CVE-2022-31108MEDIUMArbitrary `CSS` injection into the generated graph affecting the container HTML in mermaid.jsEPSS 0.9%CVE-2025-54881MEDIUMMermaid improperly sanitizes of sequence diagram labels leading to XSSEPSS 0.8%CVE-2026-50159MEDIUMMermaid allows CSS injection applying to sibling elements of the diagramEPSS 0.6%CVE-2026-71436MEDIUMMermaid XY Charts are vulnerable to an infinite loop DoSEPSS 0.6%CVE-2026-71439MEDIUMMermaid radar diagrams are vulnerable to DoSEPSS 0.5%