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CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-21438

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

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

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

quic-go webtransport-go

  • < 0.10.0affected

References