# CVE-2026-105481: CVE-2026-105481

Status: published. Published: 2026-10-23. Updated: 2026-11-02.

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**.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- nodejs / node: ≥ 22.23.3; ≤ 22.23.3 (affected, semver); ≥ 24.22.0; ≤ 24.22.0 (affected, semver); ≥ 26.12.0; ≤ 26.12.0 (affected, semver). Source: CNA: hackerone

## Severity and prioritization

- CVSS 3.0: 6.5 (medium); CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N; source: CNA: hackerone

- CVSS 3.0: 6.5 (medium); CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N; source: NVD: support@hackerone.com

- CISA KEV: No listing in collected sources

- EPSS: 0.32% as of 2026-11-02; percentile 24.80%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-367

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://nodejs.org/en/blog/vulnerability/october-2026-security-releases (CNA: hackerone)

- https://nodejs.org/en/blog/vulnerability/october-2026-security-releases (support@hackerone.com)

## Provenance

- CNA: hackerone: https://www.cve.org/CVERecord?id=CVE-2026-105481; retrieved 2026-11-02; source updated 2026-11-02

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-105481; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-105481; retrieved 2026-11-02; source updated Not reported

Revision: 1527f3a062cd10d571b05101439e8156fb8e7e883955298c3b79de6b16c30481

Canonical: https://y2.dev/cve/CVE-2026-105481

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