{"id":"GHSA-p9x5-jp3h-96mm","summary":"Qwik vulnerable to Unauthenticated RCE via server$ Deserialization","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","aliases":["CVE-2026-27971"],"modified":"2026-03-04T15:26:21.851331Z","published":"2026-03-02T21:41:18Z","database_specific":{"cwe_ids":["CWE-502"],"severity":"CRITICAL","github_reviewed":true,"github_reviewed_at":"2026-03-02T21:41:18Z","nvd_published_at":"2026-03-03T23:15:56Z"},"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"}],"affected":[{"package":{"name":"@builder.io/qwik","ecosystem":"npm","purl":"pkg:npm/%40builder.io/qwik"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.19.1"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 1.19.0","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-p9x5-jp3h-96mm/GHSA-p9x5-jp3h-96mm.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","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"}]}