CVE-2026-57497
Published:July 24, 2026
Updated:August 27, 2026
An attacker can cause excessive memory allocation in webtransport-go by sending an unknown WebTransport capsule with a large payload. The implementation skips unknown capsules by reading the entire capsule body into memory, instead of draining it without retaining the data. This can lead to memory exhaustion.
Affected Packages
https://github.com/quic-go/webtransport-go.git (GITHUB):
Affected version(s) >=v0.1.0 <v0.11.1Fix Suggestion:
Update to version v0.11.1github.com/quic-go/webtransport-go (GO):
Affected version(s) >=v0.0.0-20220605161545-1fcfed0aa8f2 <v0.11.1Fix Suggestion:
Update to version v0.11.1Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Allocation of Resources Without Limits or Throttling