CVE-2026-105481

CVE Enrichment

CVSS: 6.5 MEDIUM
EPSS: 0.32%
EPSS Percentile: 24.81%
CISA KEV: Not listed

Description

A flaw in Node.js HTTP Agent connection reuse can cause a client to accept as valid a response that was sent before the client has sent the request. This is an incomplete fix of CVE-2026-48931. The guard that destroys idle keep-alive sockets when unexpected data arrives only runs when the event loop polls for I/O. If an unsolicited response has already reached the socket but has not been read yet when the socket is handed to a new request, for example because the event loop was busy with synchronous work, the guard is removed without seeing it and the data is parsed as the response to the new request. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.

Technical Details

CVSS Version: 3.0
CNA / NVD Source: [email protected]
Published: 24-Oct-2026 00:17
Last Modified: 24-Oct-2026 02:42
EPSS Date: 2026-10-30
CWE: CWE-367

CVSS Vector


            CVSS:3.0                            AV:N /
                            AC:H /
                            PR:N /
                            UI:N /
                            S:U /
                            C:L /
                            I:H /
                            A:N

References

[email protected]

Last enrichment sync: 31-Oct-2026 12:52
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (2)

Turn off keep-alive for untrusted servers (CVE-2026-105481). Qualys Details Interim Mitigations for Node.js Flaws While Upgrades Roll Out
CVE-2026-105481 Medium HTTP HTTP keep-alive response handling issue 22.x, 24.x, 26.x Node.js Fixes 10 Vulnerabilities, Including Brotli Remote Code Execution Flaw

CVE (9)

MITRE ATT&CK (1)

Vendors (6)

Products (12)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.