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I. Basic Information for CVE-2026-31812
Vulnerability Information

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Vulnerability Title
Quinn affected by unauthenticated remote DoS via panic in QUIC transport parameter parsing
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未捕获的异常
Source: NVD (National Vulnerability Database)
Vulnerability Title
Quinn 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Quinn是quinn-rs开源的一个 IETF QUIC 传输协议的纯 Rust、异步兼容实现。 Quinn 0.11.14之前版本存在安全漏洞,该漏洞源于解析特制QUIC初始数据包时解码受攻击者控制的varints可能导致恐慌,可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
quinn-rsquinn < 0.11.14 -
II. Public POCs for CVE-2026-31812
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III. Intelligence Information for CVE-2026-31812
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