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PUBLISHED

2026-03-27 22:16

MODIFIED

2026-03-27 22:16

CVSS_SCORE V3

7.5

EPSS (Prob. Exploit)

0.47%

Top 59.4%

DATA SOURCES:

NVD 🔗 2026-03-27 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-08 GITHUB 🔗 2026-11-05 OSV 🔗 2026-11-01

> DESCRIPTION

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Versions prior to 20.8.9 may attach cookies from the current page origin (`window.location`) instead of the request target URL when `fetch(..., { credentials: "include" })` is used. This can leak cookies from origin A to destination B. Version 20.8.9 fixes the issue.

> AFFECTED_PRODUCTS

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

> CVSS V3 METRICS

CVSS_VECTOR

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EXPLOITABILITY

3.9

IMPACT

3.6

> MÉTRIQUES CVSS DÉTAILLÉES

                CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
            

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	None (N)	Aucune interaction utilisateur nécessaire
S (Périmètre) Scope	Unchanged (U)	Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité) Confidentiality Impact	High (H)	Divulgation totale d'informations
I (Impact Intégrité) Integrity Impact	None (N)	Aucune modification de données possible
A (Impact Disponibilité) Availability Impact	None (N)	Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité

High

Divulgation totale d'informations

Intégrité

None

Aucune modification de données possible

Disponibilité

None

Aucune interruption de service

> WEAKNESSES

CWE-201 CWE-359

> CWE DETAILED DESCRIPTIONS

CWE-201: Insertion of Sensitive Information Into Sent Data - The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor. | CWE-359: Exposure of Private Personal Information to an Unauthorized Actor - The product does not properly prevent a person's private, personal information from being accessed by actors who either (1) are not explicitly authorized to access the information or (2) do not have the implicit consent of the person about whom the information is collected.

> GITHUB SECURITY ADVISORY

GHSA-w4gp-fjgq-3q4g HIGH

Happy DOM's fetch credentials include uses page-origin cookies instead of target-origin cookies

AFFECTED PACKAGES:

NPM / happy-dom

< 20.8.9

Fixed in: 20.8.9

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Happy DOM's fetch credentials include uses page-origin cookies instead of target-origin cookies

AFFECTED PACKAGES:

Unknown / Unknown

457 versions affected

ALIASES:

GHSA-w4gp-fjgq-3q4g

> HISTORIQUE DES MODIFICATIONS

Première apparition

27/03/2026 22:16

Source: NVD

📊 ENRICHISSEMENT 01/04/2026 06:02

CWE

Champ modifié: Description CWE

Ancienne valeur:

N/A

Nouvelle valeur:

Total des modifications: 1 Dernière mise à jour: 7 months ago

> REFERENCES

https://github.com/capricorn86/happy-dom/blob/f8d8cad41e9722fab9eefb9dfb3cca6964...

https://github.com/capricorn86/happy-dom/commit/68324c21d7b98f53f7bb5a7b3e185bda...

https://github.com/capricorn86/happy-dom/pull/2117

https://github.com/capricorn86/happy-dom/releases/tag/v20.8.9

https://github.com/capricorn86/happy-dom/security/advisories/GHSA-w4gp-fjgq-3q4g