GHSA-P9X5-JP3H-96MM

Vulnerability from github – Published: 2026-03-02 21:41 – Updated: 2026-03-04 02:00
VLAI?
Summary
Qwik vulnerable to Unauthenticated RCE via server$ Deserialization
Details

Summary

qwik <=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the server$ RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where require() is available at runtime.

Impact

  • Remote Code Execution
Severity ?
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.19.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@builder.io/qwik"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.19.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-27971"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-02T21:41:18Z",
    "nvd_published_at": "2026-03-03T23:15:56Z",
    "severity": "CRITICAL"
  },
  "details": "### Summary\nqwik \u003c=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the `server$` RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where `require()` is available at runtime.\n\n### Impact\n- Remote Code Execution",
  "id": "GHSA-p9x5-jp3h-96mm",
  "modified": "2026-03-04T02:00:51Z",
  "published": "2026-03-02T21:41:18Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/QwikDev/qwik/security/advisories/GHSA-p9x5-jp3h-96mm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27971"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/QwikDev/qwik"
    },
    {
      "type": "WEB",
      "url": "https://github.com/QwikDev/qwik/releases/tag/%40builder.io%2Fqwik%401.19.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Qwik vulnerable to Unauthenticated RCE via server$ Deserialization"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.