Low severity · published Jun 22, 2026
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
3.7
CVSS
0.3%
EPSS
No
On KEV
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**.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NO
node · nodejs
22.22.3 through 22.22.3; 24.16.0 through 24.16.0; 26.3.0 through 26.3.0 · source: vendor
NO
Node.js · Nodejs
22.22.3; 24.16.0; 26.3.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48931
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48931
Vendor Advisory
https://nodejs.org/en/blog/vulnerability/june-2026-security-releases
www.openwall.com
http://www.openwall.com/lists/oss-security/2026/07/02/2
Exploit
https://github.com/nodejs/node/issues/63989
Third Party Advisory
https://jdstaerk.substack.com/p/nodejs-security-fix-silently-broke
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