๐Ÿ›ก๏ธ CVE-2026-21438
๐ŸŸก CVSS 5.3 โ€” Medium โœ… No Known Exploit CWE-401 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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

Severity Medium
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE CWE-401
Public Exploit โœ… No
Source NVD
Published 2026-02-12
Updated 2026-06-15
Modified 2026-02-23
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/quic-go/webtransport-go โ€” โ€”
webtransport-go โ€” 0.10.0

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