Vulnerability-Lookup

RUSTSEC-2026-0181 (GHSA-FX4F-MHW4-QM7J)

Vulnerability from osv_rustsec – Published: 2026-06-06 12:00 – Updated: 2026-08-25 02:42 – Source website

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).

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.

References

URL

Type

	https://crates.io/crates/vibeio-http	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2026-0181.html	ADVISORY
	https://github.com/ferronweb/vibeio-http/blob/mai…	WEB

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "denial-of-service"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "vibeio-http",
        "purl": "pkg:cargo/vibeio-http"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.3.2"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-fx4f-mhw4-qm7j"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "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": "RUSTSEC-2026-0181",
  "modified": "2026-08-25T02:42:17Z",
  "published": "2026-06-06T12:00:00Z",
  "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"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "DoS vulnerability in HTTP/1.x chunked encoding parser triggered by maliciously crafted chunk lengths"
}

GHSA-FX4F-MHW4-QM7J

Vulnerability from github – Published: 2026-08-24 22:05 – Updated: 2026-08-24 22:05

Summary

vibeio-http has a DoS vulnerability in HTTP/1.x chunked encoding parser triggered by maliciously crafted chunk lengths

Details

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

Show details on source website

JSON

To clipboard

{
  "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"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.