Home/CVE/Improper input validation, Improper verification of cryptographic signature vulnerability in XQUIC Project XQUIC xquic o
CVE

CVE-2026-6328

Improper input validation, Improper verification of cryptographic signature vulnerability in XQUIC Project XQUIC xquic o

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

EPSS 0.00046
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
CWE-347Improper Verification of Cryptographic Signature
▣

Scoring & Timeline

Published to NVD15 Apr 2026 · 04:17 AM
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/alibaba/xquic/commit/4764604a0e487eeb49338b4498aecda2194eae84
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