CVE-2026-6328XQUIC Improper STREAM Frame Validation in Initial/Handshake Packets
Updated under an hour ago ()
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It affects XQUIC Project XQUIC. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.3 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-20, CWE-347
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- alibaba
- NVD analysis
- Deferred
- Record last updated
- Apr 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
XQUIC Project XQUIC xquic_project:xquic (from the name) | through 1.8.3; fixed at 1.9.0 | CNA record |
References
- https://github.com/alibaba/xquic/commit/4764604a0e487eeb49338b4498aecda2194eae84
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.