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    RUSTSEC-2026-0313 (GHSA-C9GC-W9VX-W86P)

    Vulnerability from osv_rustsec – Published: 2026-09-24 12:00 – Updated: 2026-09-29 07:32 – Source website
    VLAI
    Summary
    Outgoing HTTP body write allows guest-driven host memory exhaustion
    Details

    This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-c9gc-w9vx-w86p For more information see the GitHub-hosted security advisory.

    Severity
    6.2 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    References
    To clipboard 

    {
  "affected": [
    {
      "database_specific": {
        "categories": [],
        "cvss": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "wasmtime-wasi-http",
        "purl": "pkg:cargo/wasmtime-wasi-http"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "36.0.16"
            },
            {
              "introduced": "37.0.0"
            },
            {
              "fixed": "48.0.3"
            },
            {
              "introduced": "49.0.0"
            },
            {
              "fixed": "49.0.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-c9gc-w9vx-w86p"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "This is an entry in the RustSec database for the Wasmtime security advisory\nlocated at\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-c9gc-w9vx-w86p\nFor more information see the GitHub-hosted security advisory.",
  "id": "RUSTSEC-2026-0313",
  "modified": "2026-09-29T07:32:15Z",
  "published": "2026-09-24T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/wasmtime-wasi-http"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0313.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bytecodealliance/wasmtime/pull/14408"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Outgoing HTTP body write allows guest-driven host memory exhaustion"
}