Elysia affected by arbitrary code injection through cookie config

Description

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.

Recommendation

Update the elysia package to the latest compatible version. Followings are version details:

• Affected version(s): < 1.4.18
• Patched version(s): 1.4.18

References

• GHSA-8vch-m3f4-q8jf
• CVE-2025-66457
• CWE-94
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• Arbitrary Code Injection in pouchdb - CVE-2016-10546
• Lightning Flow Scanner Vulnerable to Code Injection via Unsafe Use of `new Function()` in APIVersion Rule - CVE-2025-67750
• next-mdx-remote affected by arbitrary code execution in React server-side rendering of untrusted MDX content - CVE-2026-0969
• BrowserStack Local vulnerable to Command Injection through logfile variable - CVE-2025-57283

Tags:

npm

elysia