> CVE-2026-21438 [MEDIUM]

« BACK_TO_HOME
PUBLISHED
2026-02-12 19:15
MODIFIED
2026-02-12 19:15
CVSS_SCORE V3
5.3
EPSS (Prob. Exploit)
0.41%
Top 65.6%
DATA SOURCES:
NVD đź”— 2026-02-12 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-10-25 GITHUB đź”— 2026-10-28 OSV đź”— 2026-02-19

> DESCRIPTION

webtransport-go is an implementation of the WebTransport protocol. Prior to 0.10.0, an attacker can cause unbounded memory consumption repeatedly creating and closing many WebTransport streams. Closed streams were not removed from an internal session map, preventing garbage collection of their resources. This vulnerability is fixed in v0.10.0.

> 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:N/I:N/A:L
EXPLOITABILITY
3.9
IMPACT
1.4

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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
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-401 CWE-459

> CWE DETAILED DESCRIPTIONS

CWE-401: Missing Release of Memory after Effective Lifetime - The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse. | CWE-459: Incomplete Cleanup - The product does not properly "clean up" and remove temporary or supporting resources after they have been used.

> GITHUB SECURITY ADVISORY

GHSA-2f2x-8mwp-p2gc MODERATE

webtransport-go: Memory Exhaustion Attack due to Missing Cleanup of Streams Map

AFFECTED PACKAGES:
GO / github.com/quic-go/webtransport-go
<= 0.9.0
Fixed in: 0.10.0

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

webtransport-go affected by a Memory Exhaustion Attack due to Missing Cleanup of Streams Map

AFFECTED PACKAGES:
Unknown / Unknown
15 versions affected
ALIASES:
GHSA-2f2x-8mwp-p2gc

> HISTORIQUE DES MODIFICATIONS

Première apparition
12/02/2026 19:15
Source: NVD
đź“Š ENRICHISSEMENT 01/03/2026 06:46
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-401: Missing Release of Memory after Effective Lifetime - The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocatio...
Total des modifications: 1 Dernière mise à jour: 8 months ago

> REFERENCES

https://github.com/quic-go/webtransport-go/releases/tag/v0.10.0
https://github.com/quic-go/webtransport-go/security/advisories/GHSA-2f2x-8mwp-p2...
« BACK_TO_HOME