{"id":"RUSTSEC-2026-0181","aliases":["GHSA-fx4f-mhw4-qm7j"],"title":"DoS vulnerability in HTTP/1.x chunked encoding parser triggered by maliciously crafted chunk lengths","summary":"DoS vulnerability in HTTP/1.x chunked encoding parser triggered by maliciously crafted chunk lengths","severity":"none","vendor":"vibeio-http","product":"vibeio-http","ecosystem":"rust","affected":["vibeio-http >= 0.0.0-0, < 0.3.2"],"patched":["vibeio-http 0.3.2"],"published":"2026-06-06","updated":"2026-08-25","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0181","references":[{"url":"https://crates.io/crates/vibeio-http"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0181.html"},{"url":"https://github.com/ferronweb/vibeio-http/blob/main/CHANGELOG.md#vibeio-http-032"}],"tags":["osv","rust"],"ingestedAt":"2026-08-25T19:26:23.673Z","slug":"RUSTSEC-2026-0181","body":"## Overview\n\nWhen 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.\n\n## Affected packages\n\n- `vibeio-http >= 0.0.0-0, < 0.3.2`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `vibeio-http 0.3.2`","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}