CVE-2025-66457

EPSS 0.08%

Elysia affected by arbitrary code injection through cookie config

發布日:2025/12/9修改日:2026/2/4

描述

Arbitrary code execution from cookie config. If dynamic cookies are enabled (ie there exists a schema for cookies), the cookie config is injected into the compiled route without first being sanitised. Availability of this exploit is generally low, as it requires write access to either the Elysia app's source code (in which case the vulnerability is meaningless) or write access to the cookie config (perhaps where it is assumed to be provisioned by the environment). However when combined with GHSA-hxj9-33pp-j2cc, this vulnerability allows for a full RCE chain. ### Impact - aot enabled (default) - cookie schema passed to route - Cookie config controllable eg. via env Example of vulnerable code ```js new Elysia({ cookie: { secrets: `' + console.log('pwned from secrets') + '` }, }) .get("/", () => "hello world", { cookie: t.Cookie({ foo: t.Any(), }), }) ``` POC: https://github.com/sportshead/elysia-poc ### Patches Patched by 1.4.17 (https://github.com/elysiajs/elysia/pull/1564) Reference commit: - https://github.com/elysiajs/elysia/pull/1564/commits/26935bf76ebc43b4a43d48b173fc853de43bb51e - https://github.com/elysiajs/elysia/pull/1564/commits/3af978663e437dccc6c1a2a3aff4b74e1574849e ### Workarounds Sanitize cookie-related env input ```typescript const overrideUnsafeQuote = (value: string) => // '`' + value + '`' '`' + value.replace(/'/g, '\\`').replace(/\${/g, '$\\{') + '`' ```

受影響套件(1)

CVSS 分數

來源版本嚴重程度向量
osvCVSS 4.0—CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

參考連結(8)