CVE-2026-126343
@hono/node-server: Unhandled `ECONNRESET` on the socket during an asynchronous WebSocket upgrade crashes the process
@hono/node-server allows running the Hono application on Node.js. From 2.0.0 until 2.1.6, the WebSocket upgrade handler waits for the Hono application to finish asynchronous middleware or handler work without first attaching an error listener to the socket. If an unauthenticated client resets the TCP connection during that window, the socket emits an unhandled ECONNRESET error and terminates the Node.js process. If a global uncaughtException handler suppresses termination, the pending upgrade waiter is not released and repeated requests can grow the heap. This affects applications that enable WebSocket support and perform asynchronous work on the upgrade path. This issue is fixed in version 2.1.6.
Fixes and workarounds
Fix
@hono/node-server (npm): OSV reports a fixed version 2.1.6. Check the advisory for supported release branches.
Source: OSV GHSA-qv5m-9pm6-hqp3Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| node-server honojs |
>= 2.0.0, < 2.1.6 (affected) | CNA: GitHub_M |
@hono/node-server@hono/node-server
npm |
≥ 2.0.0; < 2.1.6 (affected, semver); OSV events: introduced 2.0.0; fixed 2.1.6Source events (semver)Other versions: unaffected |
OSV GHSA-qv5m-9pm6-hqp3 |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 5.3 medium |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | CNA: GitHub_M |
| 3.1 / 5.3 medium |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/honojs/node-server/security/advisories/GHSA-qv5m-9pm6-hqp3CNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/honojs/node-server/commit/61cc0267e613e684401f17c27538ba3bf97339a4CNA: GitHub_M · x_refsource_MISC
- https://github.com/honojs/node-server/releases/tag/v2.1.6CNA: GitHub_M · x_refsource_MISC
- https://github.com/honojs/node-server/commit/61cc0267e613e684401f17c27538ba3bf97339a4[email protected]
- https://github.com/honojs/node-server/releases/tag/v2.1.6[email protected]
- https://github.com/honojs/node-server/security/advisories/GHSA-qv5m-9pm6-hqp3[email protected]
- https://github.com/advisories/GHSA-qv5m-9pm6-hqp3OSV / GitHub Security Advisories · advisory
- https://osv.dev/vulnerability/GHSA-qv5m-9pm6-hqp3OSV / GitHub Security Advisories · osv
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