GHSA-fx4f-mhw4-qm7j: Vibeio http Denial of Service Vulnerability

MODERATE
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CWE-770
Published
Advisory Summary

GHSA-fx4f-mhw4-qm7j is a MODERATE denial of service vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Vibeio http libraries in the crates.io ecosystem. The issue involves vibeio-http has a dos vulnerability in http/1.x chunked encoding parser triggered by maliciously crafted chunk lengths. Remediation is available by upgrading affected packages to version 0.3.2.

GHSA-fx4f-mhw4-qm7j at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-fx4f-mhw4-qm7j
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-770: Allocation of Resources Without Limits or Throttling
Affected Product Vibeio http
Package Ecosystem crates.io
Published Date
Last Updated

How to Fix GHSA-fx4f-mhw4-qm7j

To remediate this vulnerability, upgrade all affected Vibeio http dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

vibeio-http fixed: 0.3.2 
Upgrade vibeio-http to 0.3.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for vibeio-http

How to Check if You Are Affected

To determine whether your application is affected by GHSA-fx4f-mhw4-qm7j, inspect your project dependencies for Vibeio http:

inspect dependencies for vibeio-http

Analyze the terminal output to locate any version of Vibeio http in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.3.2), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-770: Allocation of Resources Without Limits or Throttling, where the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. In Vibeio http, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

GHSA-fx4f-mhw4-qm7j Affected Vibeio http Versions

1 component(s)
Fixed Versions:
0.3.2
Product / Package Ecosystem Affected Versions Fixed Version
vibeio-http
 crates.io
< 0.3.2
0.3.2

References

Vibeio http Source Repository REPOSITORY
https://github.com/ferronweb/vibeio-http
Vibeio http Source Repository REPOSITORY
https://github.com/ferronweb/vibeio-http/blob/main/CHANGELOG.md#vibeio-http-032
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2026-0181.html

Frequently Asked Questions

What is GHSA-fx4f-mhw4-qm7j?
GHSA-fx4f-mhw4-qm7j is a security vulnerability in Vibeio http involving vibeio-http has a DoS vulnerability in HTTP/1.x chunked encoding parser triggered by maliciously crafted chunk lengths under CWE-770: Allocation of Resources Without Limits or Throttling.
Which Vibeio http versions are affected?
Affected versions include releases prior to 0.3.2 across affected packages: vibeio-http.
What version fixes GHSA-fx4f-mhw4-qm7j?
Upgrading to 0.3.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is vibeio-http affected?
Yes, vibeio-http is affected in releases prior to 0.3.2. Upgrade your dependency to 0.3.2 or later.
What CWE is associated with GHSA-fx4f-mhw4-qm7j?
GHSA-fx4f-mhw4-qm7j is classified under CWE-770: Allocation of Resources Without Limits or Throttling (The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.).
How can I check crates.io dependencies for GHSA-fx4f-mhw4-qm7j?
Run the dependency tree command: 'inspect dependencies for vibeio-http'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-fx4f-mhw4-qm7j",
  "modified" : "2026-08-24T22:05:02Z",
  "published" : "2026-08-24T22:05:02Z",
  "aliases" : [ ],
  "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).\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.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "vibeio-http"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.3.2"
      } ]
    } ]
  } ],
  "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"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-770" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-24T22:05:02Z",
    "nvd_published_at" : null
  }
}