{"id":"RUSTSEC-2026-0181","summary":"DoS vulnerability in HTTP/1.x chunked encoding parser triggered by maliciously crafted chunk lengths","details":"When using the affected versions of the `vibeio-http` crate, an attacker could craft a malicious HTTP/1.x request with a large chunk length (between `usize::MAX - 1` and `usize::MAX` inclusive) and send it, causing the server to crash (integer overflow panic in debug builds, split_to out of bounds panic in release builds).\n\nThis was fixed in `vibeio-http` 0.3.2 by erroring on the chunk length if it exceeds `usize::MAX - 2` (using `checked_add()` instead of `+` operator), preventing integer overflow.","aliases":["GHSA-fx4f-mhw4-qm7j"],"modified":"2026-08-25T02:45:03.435906530Z","published":"2026-06-06T12:00:00Z","database_specific":{"license":"CC0-1.0"},"references":[{"type":"PACKAGE","url":"https://crates.io/crates/vibeio-http"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2026-0181.html"},{"type":"WEB","url":"https://github.com/ferronweb/vibeio-http/blob/main/CHANGELOG.md#vibeio-http-032"}],"affected":[{"package":{"name":"vibeio-http","ecosystem":"crates.io","purl":"pkg:cargo/vibeio-http"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"},{"fixed":"0.3.2"}]}],"ecosystem_specific":{"affects":{"arch":[],"os":[],"functions":[]},"affected_functions":null},"database_specific":{"source":"https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0181.json","categories":["denial-of-service"],"cvss":null,"informational":null}}],"schema_version":"1.9.0"}