VDB
DEBIAN-CVE-2026-31812
DEBIAN-CVE-2026-31812
PUBLISHED
CVSS 8.699999809265137 HIGH
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.
Risk Scores
CVSS v4.0
8.699999809265137
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | rust-quinn-proto | 0.11.9-3, 0.11.9-2, 0.11.9-1 |
| Debian:12 | rust-quinn-proto | 0, 0, 0.10.2-1 |
| Debian:13 | rust-quinn-proto | 0.11.9-2, 0.11.9-3, 0.11.9-1 |
Timeline
- Mar 10, 2026 CVE Published
- Apr 28, 2026 CVE Updated