CVE-2026-25800High· 7.5▾ TwilightA flaw was found in Quinn, a Rust implementation of the QUIC transport protocol. A remote attacker can exploit this vulnerability by sending specially crafted QUIC stream fragments with many gaps. This can lead to high buffer overhead in t…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.2 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 1.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.3%
0.3% → 0.8%
Last analysed / modified upstream
A flaw was found in Quinn, a Rust implementation of the QUIC transport protocol. A remote attacker can exploit this vulnerability by sending specially crafted QUIC stream fragments with many gaps. This can lead to high buffer overhead in the Assembler component, causing memory exhaustion and a denial of service (DoS) for the receiving connection.
quinn: Quinn: Remote memory exhaustion via malformed QUIC stream fragments — rated Important by Red Hat. Released 2026-07-23, updated 2026-10-15.
Not affected:
Refer to the advisory for fix availability.
Affected packages:
quinn-proto >= 0.0.0-0, < 0.11.15Patched in:
quinn-proto 0.11.15Connected by shared product, vendor, weakness, or advisory.
GHSA-4w2j-m93h-cj5jHigh· 7.5Quinn: Remote memory exhaustion in quinn-proto from unbounded out-of-order stream reassembly
CVE-2026-114136High· 7.5djangorestframework: djangorestframework: Denial of Service via improper charset handling in JSON parser (CVE-2026-114136)
RUSTSEC-2026-0343High· 7.5Outgoing datagram buffer accounting can panic the sender in quinn-proto
RUSTSEC-2026-0340High· 7.5Peer minimum ACK delay can panic quinn-proto when ACK_FREQUENCY transmission is enabled
RUSTSEC-2026-0341High· 7.5Stream reassembly memory-exhaustion guard in quinn-proto can be bypassed
RUSTSEC-2026-0342NoneZero-length DATAGRAM frames bypass the receive buffer limit in quinn-proto