CVE-2026-48931
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**.
02 / AFFECTED SOFTWARE
Affected packages
3 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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**.
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**.
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**.
05 / REFERENCES
Further evidence
- http://www.openwall.com/lists/oss-security/2026/07/02/2
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48931.json
- https://github.com/nodejs/node/issues/63989
- https://jdstaerk.substack.com/p/nodejs-security-fix-silently-broke
- https://nodejs.org/en/blog/vulnerability/june-2026-security-releases
- https://nvd.nist.gov/vuln/detail/CVE-2026-48931