{"id":"CVE-2026-25800","sourceIdentifier":"security-advisories@github.com","published":"2026-07-23T20:17:07.860","lastModified":"2026-10-24T13:10:00.147","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"Quinn is a pure-Rust, async-compatible implementation of the IETF QUIC transport protocol. Starting in version 0.1.0 and prior to version 0.11.15, the `Assembler` component that assembles unordered stream fragments into consecutive chunks of the stream incurs some overhead for non-contiguous fragments. Readers that read from a `RecvStream` in order (through an `AsyncRead` impl for example) will be sensitive to peers that send fragments while leaving out early parts of the stream, and in particular, fragments with many gaps (because these cannot be defragmented). In such a scenario, the receiving connection suffers from high buffer overhead, enabling memory exhaustion. Version 0.11.15 fixes the issue."},{"lang":"es","value":"Quinn es una implementación pura en Rust, compatible con async, del protocolo de transporte QUIC del IETF. A partir de la versión 0.1.0 y antes de la versión 0.11.15, el componente ’Assembler’ que ensambla fragmentos de flujo desordenados en bloques consecutivos del flujo incurre en cierta sobrecarga para fragmentos no contiguos. Los lectores que leen de un ’RecvStream’ en orden (a través de una implementación de ’AsyncRead’, por ejemplo) serán sensibles a los pares que envían fragmentos mientras omiten partes tempranas del flujo, y, en particular, a los fragmentos con muchas brechas (porque estos no pueden ser desfragmentados). En tal escenario, la conexión receptora sufre de una alta sobrecarga de búfer, lo que permite el agotamiento de la memoria. La versión 0.11.15 corrige el problema."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"quinn-rs","product":"quinn","versions":[{"version":">= 0.1.0, < 0.11.15","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-23T19:36:43.190990Z","id":"CVE-2026-25800","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-770"}]}],"references":[{"url":"https://github.com/quinn-rs/quinn/pull/2694","source":"security-advisories@github.com"},{"url":"https://github.com/quinn-rs/quinn/security/advisories/GHSA-4w2j-m93h-cj5j","source":"security-advisories@github.com"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0185.html","source":"security-advisories@github.com"}]}