CVE-2026-21438

MEDIUM

5.3

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.

Details CVE

Score CVSS v3.15.3

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie2/12/2026

Derniere modification2/19/2026

Sourcenvd

Observations honeypot0

Produits affectes

quic-go:webtransport-go

Faiblesses (CWE)

CWE-401CWE-459

References

https://github.com/quic-go/webtransport-go/releases/tag/v0.10.0(security-advisories@github.com)

https://github.com/quic-go/webtransport-go/security/advisories/GHSA-2f2x-8mwp-p2gc(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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