> CVE-2026-33129 [MEDIUM]

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PUBLISHED
2026-03-20 10:16
MODIFIED
2026-03-20 10:16
CVSS_SCORE V3
5.9
EPSS (Prob. Exploit)
0.46%
Top 60.9%
DATA SOURCES:
NVD đź”— 2026-03-20 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-10-25 GITHUB đź”— 2026-11-05 OSV đź”— 2026-09-20

> DESCRIPTION

H3 is a minimal H(TTP) framework. Versions 2.0.1-beta.0 through 2.0.0-rc.8 contain a Timing Side-Channel vulnerability in the requireBasicAuth function due to the use of unsafe string comparison (!==). This allows an attacker to deduce the valid password character-by-character by measuring the server's response time, effectively bypassing password complexity protections. This issue is fixed in version 2.0.1-rc.9.

> 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:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EXPLOITABILITY
2.2
IMPACT
3.6

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/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
High (H)
Conditions spécifiques doivent être réunies 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-208

> CWE DETAILED DESCRIPTIONS

CWE-208: Observable Timing Discrepancy - Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.

> GITHUB SECURITY ADVISORY

GHSA-26f5-8h2x-34xh MODERATE

h3 has an observable timing discrepancy in basic auth utils

AFFECTED PACKAGES:
NPM / h3
>= 2.0.0-beta.0, <= 2.0.0-rc.8
Fixed in: 2.0.1-rc.9

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

h3 has an observable timing discrepancy in basic auth utils

AFFECTED PACKAGES:
Unknown / Unknown
126 versions affected
ALIASES:
GHSA-26f5-8h2x-34xh

> HISTORIQUE DES MODIFICATIONS

Première apparition
20/03/2026 10:16
Source: NVD
📊 ENRICHISSEMENT 01/04/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-208: Observable Timing Discrepancy - Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant infor...
Total des modifications: 1 Dernière mise à jour: 7 months ago

> REFERENCES

https://github.com/h3js/h3/pull/1283
https://github.com/h3js/h3/releases/tag/v2.0.1-rc.9
https://github.com/h3js/h3/security/advisories/GHSA-26f5-8h2x-34xh
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