{"id":"CVE-2026-27971","aliases":["EUVD-2026-9345","GHSA-p9x5-jp3h-96mm"],"status":"published","title":"Qwik affected by unauthenticated RCE via server$ Deserialization","description":"Qwik is a performance focused javascript framework. qwik \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. This vulnerability is fixed in 1.19.1.","severity":{"version":"4.0","score":9.2,"vector":"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","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.05478,"percentile":0.92827,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-502"],"published":"2026-03-02T21:41:18Z","modified":"2026-10-28T02:30:42Z","exploits":[{"source":"nuclei","id":"CVE-2026-27971","title":"Qwik - Unauthenticated RCE via server$ Deserialization","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-27971.yaml"},{"source":"pocgithub","id":"Ghalendar/CVE-2026-27971_POC","title":"Ghalendar/CVE-2026-27971_POC","date":"2026-07-21","url":"https://github.com/Ghalendar/CVE-2026-27971_POC"}],"fixes":[{"ecosystem":"npm","package":"@builder.io/qwik","fixed_in":["1.19.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@builder.io/qwik","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.19.0"},{"fixed":"1.19.1"}]}]},{"source":"osv","ecosystem":"npm","package":"@builder.io/qwik","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.19.1"}]}]}],"products":[{"vendor":"qwik","product":"qwik"},{"vendor":"qwikdev","product":"qwik"}],"references":[{"url":"https://github.com/QwikDev/qwik/security/advisories/GHSA-p9x5-jp3h-96mm","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory","web"]},{"url":"https://github.com/QwikDev/qwik/releases/tag/%40builder.io%2Fqwik%401.19.1","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27971","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-p9x5-jp3h-96mm"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27971.json","tags":["advisory"]},{"url":"https://github.com/QwikDev/qwik","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-27971","title":"Qwik affected by unauthenticated RCE via server$ Deserialization","description":"Qwik is a performance focused javascript framework. qwik \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. This vulnerability is fixed in 1.19.1.","status":"published","published":"2026-03-03T22:55:38.064Z","modified":"2026-03-04T16:05:45.401Z","cvss":[{"version":"4.0","score":9.2,"vector":"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","level":"critical","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:19:48.826324Z"}],"euvd":[{"id":"EUVD-2026-9345","description":"Qwik is a performance focused javascript framework. qwik \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. This vulnerability is fixed in 1.19.1.","status":"published","published":"2026-03-03T22:55:38Z","modified":"2026-03-04T16:05:45Z","cvss":[{"version":"4.0","score":9.2,"vector":"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","level":"critical"}],"updated_at":"2026-11-02T19:48:11.18109Z"}],"ghsa":[{"id":"GHSA-p9x5-jp3h-96mm","title":"Qwik vulnerable to Unauthenticated RCE via server$ Deserialization","description":"### Summary\nqwik \u003c=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the `server$` RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where `require()` is available at runtime.\n\n### Impact\n- Remote Code Execution","status":"published","published":"2026-03-02T21:41:18Z","modified":"2026-03-04T02:00:52Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:39:31.060223Z"}],"nvd":[{"id":"CVE-2026-27971","description":"Qwik is a performance focused javascript framework. qwik \u003c=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the server$ 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. This vulnerability is fixed in 1.19.1.","status":"published","published":"2026-03-03T23:15:56.227Z","modified":"2026-06-17T10:27:59.753Z","cvss":[{"version":"4.0","score":9.2,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:12:07.420927Z"}],"osv":[{"id":"CVE-2026-27971","title":"Qwik affected by unauthenticated RCE via server$ Deserialization","description":"Qwik is a performance focused javascript framework. qwik \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. This vulnerability is fixed in 1.19.1.","status":"published","published":"2026-03-03T22:55:38.064Z","modified":"2026-10-28T02:30:42.819813337Z","cvss":[{"version":"4.0","score":9.2,"vector":"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","level":"critical"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:45:00.180685Z"},{"id":"GHSA-p9x5-jp3h-96mm","title":"Qwik vulnerable to Unauthenticated RCE via server$ Deserialization","description":"### 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","status":"published","published":"2026-03-02T21:41:18Z","modified":"2026-03-04T15:26:21.851331Z","cvss":[{"version":"4.0","score":9.2,"vector":"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","level":"critical"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:46:52.891208Z"}]}}