> CVE-2026-71439 [MEDIUM]

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PUBLISHED
2026-08-06 22:18
MODIFIED
2026-08-06 22:18
CVSS_SCORE V3
5.3
EPSS (Prob. Exploit)
0.53%
Top 56.1%
DATA SOURCES:
NVD đź”— 2026-08-06 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-10-25 GITHUB đź”— 2026-10-29 OSV đź”— 2026-08-13

> DESCRIPTION

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 11.6.0 until 11.16.1, Mermaid Radar Diagrams allow arbitrary large values for the ticks parameter, which can cause high CPU usage and freeze the rendering webpage or JavaScript process for long periods of time, potentially until the process is killed from memory exhaustion. This issue is fixed in version 11.16.1.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
Unknown (P)
Interaction inconnue
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
Low (L)
Interruption partielle du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
Low
Interruption partielle du service possible

> WEAKNESSES

CWE-606 CWE-1322

> CWE DETAILED DESCRIPTIONS

CWE-606: Unchecked Input for Loop Condition - The product does not properly check inputs that are used for loop conditions, potentially leading to a denial of service or other consequences because of excessive looping. | CWE-1322: Use of Blocking Code in Single-threaded, Non-blocking Context - The product uses a non-blocking model that relies on a single threaded process for features such as scalability, but it contains code that can block when it is invoked.

> GITHUB SECURITY ADVISORY

GHSA-rhh3-jpg6-66xh MODERATE

Mermaid radar diagrams are vulnerable to DoS

AFFECTED PACKAGES:
NPM / mermaid
>= 11.6.0, < 11.16.1
Fixed in: 11.16.1

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Mermaid radar diagrams are vulnerable to DoS

AFFECTED PACKAGES:
Unknown / Unknown
51 versions affected
ALIASES:
GHSA-rhh3-jpg6-66xh

> HISTORIQUE DES MODIFICATIONS

Première apparition
06/08/2026 22:18
Source: NVD
đź“Š ENRICHISSEMENT 01/09/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-606: Unchecked Input for Loop Condition - The product does not properly check inputs that are used for loop conditions, potentially leading to a denial of service or other consequences because of ...
Total des modifications: 1 Dernière mise à jour: 2 months ago

> REFERENCES

https://github.com/mermaid-js/mermaid/commit/59b22fad2b3bb04f87a476c84a8a2b24679...
https://github.com/mermaid-js/mermaid/pull/8022
https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.16.1
https://github.com/mermaid-js/mermaid/security/advisories/GHSA-rhh3-jpg6-66xh
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