rustsec-2026-0375

{
  "affected": [
    {
      "database_specific": {
        "categories": [],
        "cvss": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
        "informational": null,
        "source": "https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0375.json"
      },
      "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": "46.0.0"
            },
            {
              "fixed": "48.0.7"
            },
            {
              "introduced": "49.0.0"
            },
            {
              "fixed": "49.0.4"
            }
          ],
          "type": "SEMVER"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-121439",
    "GHSA-9prg-84vf-g5fc"
  ],
  "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-9prg-84vf-g5fc\nFor more information see the GitHub-hosted security advisory.",
  "id": "RUSTSEC-2026-0375",
  "modified": "2026-11-04T02:55:43.025714915Z",
  "published": "2026-10-19T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/wasmtime-wasi-http"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0375.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bytecodealliance/wasmtime/pull/14822"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "`wasi-http` p3: Guests can set incorrect content-length for spliced response bodies"
}