GHSA-2CRG-3P73-43XP

Vulnerability from github – Published: 2026-04-10 17:24 – Updated: 2026-04-10 19:46
VLAI?
Summary
@sveltejs/adapter-node has a BODY_SIZE_LIMIT bypass
Details

Under certain circumstances, requests could bypass the BODY_SIZE_LIMIT on SvelteKit applications running with adapter-node. This bypass does not affect body size limits at other layers of the application stack, so limits enforced in the WAF, gateway, or at the platform level are unaffected.

Severity ?
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.57.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@sveltejs/kit"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.57.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-40073"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-10T17:24:31Z",
    "nvd_published_at": "2026-04-10T17:17:12Z",
    "severity": "HIGH"
  },
  "details": "Under certain circumstances, requests could bypass the `BODY_SIZE_LIMIT` on SvelteKit applications running with `adapter-node`. This bypass does not affect body size limits at other layers of the application stack, so limits enforced in the WAF, gateway, or at the platform level are unaffected.",
  "id": "GHSA-2crg-3p73-43xp",
  "modified": "2026-04-10T19:46:38Z",
  "published": "2026-04-10T17:24:31Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/sveltejs/kit/security/advisories/GHSA-2crg-3p73-43xp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40073"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sveltejs/kit/commit/3202ed6c98f9e8d86bf0c4c7ad0f2e273e5e3b95"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/sveltejs/kit"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sveltejs/kit/releases/tag/%40sveltejs%2Fkit%402.57.1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.57.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "@sveltejs/adapter-node has a BODY_SIZE_LIMIT bypass"
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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