What’s Vulnerable › Vulnerabilities
CVE-2026-6328: XQUIC Improper STREAM Frame Validation in Initial/Handshake Packets
- Severity: high (CVSS 8.3 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-04-15 · updated 2026-06-17
- Weakness: CWE-20
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.
Affected products
- XQUIC Project XQUIC: through 1.8.3
References
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