CVE-2026-6328

XQUIC Improper STREAM Frame Validation in Initial/Handshake Packets

State: Published
Severity: 8.3 High
Published: Apr 15, 2026
Updated: Apr 15, 2026
Reserved: Apr 15, 2026

Description

Improper input validation, Improper verification of cryptographic signature vulnerability in XQUIC Project XQUIC xquic on Linux (QUIC protocol implementation, packet processing module, STREAM frame handler modules) allows Protocol Manipulation.This issue affects XQUIC: through 1.8.3.

Scores

CVSS	Score	Vector	Source
4.0	8.3 High	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N	alibaba

Weaknesses

CWE-20 Improper input validation
CWE-347 Improper verification of cryptographic signature

Affected Products

Product	Versions
XQUICXQUIC Project	1.8.3 and earlierAffectedfrom 1.9.0Not affected

References

https://github.com/alibaba/xquic/commit/4764604a0e487eeb49338b4498aecda2194eae84

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