VYPR
Medium severity5.3NVD Advisory· Published Feb 12, 2026· Updated Jun 17, 2026

CVE-2026-21438

CVE-2026-21438

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
github.com/quic-go/webtransport-goGo
< 0.10.00.10.0

Affected products

29

Patches

Vulnerability mechanics

References

4

News mentions

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