GHSA-FX4F-MHW4-QM7J

Vulnerability from github – Published: 2026-08-24 22:05 – Updated: 2026-08-24 22:05
VLAI
Summary
vibeio-http has a 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).

This 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.

Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "vibeio-http"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.3.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-24T22:05:02Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "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.",
  "id": "GHSA-fx4f-mhw4-qm7j",
  "modified": "2026-08-24T22:05:02Z",
  "published": "2026-08-24T22:05:02Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://github.com/ferronweb/vibeio-http"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ferronweb/vibeio-http/blob/main/CHANGELOG.md#vibeio-http-032"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0181.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "vibeio-http has a DoS vulnerability in HTTP/1.x chunked encoding parser triggered by maliciously crafted chunk lengths"
}



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