CVE-2026-31812
Quinn affected by unauthenticated remote DoS via panic in QUIC transport parameter parsing
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
Quinn is a pure-Rust, async-compatible implementation of the IETF QUIC transport protocol. Prior to 0.11.14, a remote, unauthenticated attacker can trigger a denial of service in applications using vulnerable quinn versions by sending a crafted QUIC Initial packet containing malformed quic_transport_parameters. In quinn-proto parsing logic, attacker-controlled varints are decoded with unwrap(), so truncated encodings cause Err(UnexpectedEnd) and panic. This is reachable over the network with a single packet and no prior trust or authentication. This vulnerability is fixed in 0.11.14.
| CWE | CWE-248 |
| Vendor | quinn-rs |
| Product | quinn |
| Published | Mar 10, 2026 |
| Last Updated | Mar 11, 2026 |
Stay Ahead of the Next One
Get instant alerts for quinn-rs quinn
Be the first to know when new unknown vulnerabilities affecting quinn-rs quinn are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
quinn-rs / quinn
< 0.11.14