CVE-2026-48931

Description

A flaw in Node.js HTTP Agent can cause a client to accept as valid a response that is send before the client has sent the request. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.

Affected Platforms

Weakness Type

CWE-367

References

• https://nodejs.org/en/blog/vulnerability/june-2026-security-releases
• http://www.openwall.com/lists/oss-security/2026/07/02/2
• https://github.com/nodejs/node/issues/63989
• https://jdstaerk.substack.com/p/nodejs-security-fix-silently-broke