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Both automatically derived and explicitly configured\nmaximum ACK delays use this calculation.\n\nSending ACK_FREQUENCY frames is disabled by default, so only endpoints that opt in are affected.\n\nThe flaw was corrected in 0.11.18 by computing the delay with explicit minimum and maximum bounds\ninstead of `clamp`.\n\nThanks to [@zerox80](https://github.com/zerox80) for reporting this issue.","state":0,"publishedAt":"2026-09-14T12:00:00+00:00","modifiedAt":"2026-10-12T18:15:01.9754783+00:00","affected":[{"ecosystem":"crates.io","name":"quinn-proto","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.11.0"},{"kind":"fixed","version":"0.11.18"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null}],"references":["https://crates.io/crates/quinn-proto","https://rustsec.org/advisories/RUSTSEC-2026-0340.html","https://github.com/quinn-rs/quinn/pull/2868"],"sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0340","license":"OSV · upstream source license applies","key":"osv:RUSTSEC-2026-0340","identifiers":["RUSTSEC-2026-0340","GHSA-3g6h-r5qx-f6hq"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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