{"id":"GHSA-fx4f-mhw4-qm7j","title":"vibeio-http has a DoS vulnerability in HTTP/1.x chunked encoding parser triggered by maliciously crafted chunk lengths","summary":"vibeio-http has a DoS vulnerability in HTTP/1.x chunked encoding parser triggered by maliciously crafted chunk lengths","severity":"medium","cwe":["CWE-770"],"vendor":"vibeio-http","product":"vibeio-http","ecosystem":"rust","affected":["vibeio-http < 0.3.2"],"patched":["vibeio-http 0.3.2"],"published":"2026-08-24","updated":"2026-08-24","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-fx4f-mhw4-qm7j","references":[{"url":"https://github.com/ferronweb/vibeio-http/blob/main/CHANGELOG.md#vibeio-http-032"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0181.html"},{"url":"https://github.com/advisories/GHSA-fx4f-mhw4-qm7j"}],"tags":["ghsa","rust"],"ingestedAt":"2026-08-24T22:12:10.917Z","slug":"GHSA-fx4f-mhw4-qm7j","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 < 0.3.2`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `vibeio-http 0.3.2`","depth":"sunlit","depthScore":28,"depthScoreParts":{"impact":27.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}