CVE-2026-31812
Published: Mar 10, 2026
Modified: Mar 11, 2026
Description
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.
| Vendor | Product | Versions |
|---|---|---|
quinn-rs | quinn | affected < 0.11.14 |
Weaknesses (CWE)
References
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