CVE-2026-48931

State: Published
Severity: 3.7 Low
Published: Jun 22, 2026
Updated: Jul 3, 2026
Reserved: May 26, 2026

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**.

Scores

CVSS	Score	Vector	Source
3.0	3.7 Low	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N	hackerone

Weaknesses

CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

Affected Products

Product	Versions
nodenodejs	22.22.3 through 22.22.3Affected 24.16.0 through 24.16.0Affected 26.3.0 through 26.3.0Affected

References

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

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