CVE-2026-56850: A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS (mTLS) cli…
A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS (mTLS) client identities to be reused across requests configured with different client certificates. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.
- Published by source
- 2026-07-30
- First seen by Reality Radar
- 2026-10-24
- Last verified
- 2026-10-24
Affected
- Manufacturer
- nodejs
- Products
- node.js
- Versions
- <=22.23.1 <=24.18.0 <=26.5.0
- CPE
- cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*
Whether your exact unit is affected depends on the model, serial number and region in the official notice.
What the official notice says
Risk: CVSS 4.4
Is this affecting you?
Add what you own or use and Reality Radar will tell you when official changes match it — with evidence and next steps.
Sources
- NIST National Vulnerability Database Tier A · official published 2026-07-30
Evidence ledger
Every piece of evidence we store is appended to a public hash chain, so later edits are detectable. Anyone can re-verify it.
| Entry | Kind | Observed | Evidence hash | Entry hash |
|---|---|---|---|---|
| #1504 | new | 2026-10-24 | c07bb4bcfcb1…9f4c75 | 8c246400155a…a11df1 |
Chain head: #1565 7d9afd922511…68b9c7