CVE-2026-58040 Security feature bypass in node
Node.js HTTPS Agent fails to verify hostnames during TLS session reuse, allowing attackers to bypass identity verification checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-58040?
CVE-2026-58040 is a medium-severity vulnerability in nodejs node, published on 30 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An incomplete fix has been identified in Node.js: HTTPS Agent TLS session reuse skips hostname verification across identity policies (incomplete fix of CVE-2026-48934). This vulnerability affects Node.js **22.x**, **24.x**, and **26.x**.
Weakness: CWE-297
Which versions are affected by CVE-2026-58040?
2 open source packages ship an affected version, including node and node-min.
| Package | Affected | Fixed in |
|---|---|---|
node Bitnami | All versions | 22.23.2, 24.18.1, 26.5.1 |
node-min Bitnami | All versions | 22.23.2, 24.18.1, 26.5.1 |
How do I fix CVE-2026-58040?
Upgrade node to a fixed version for your release line: 22.23.2, 24.18.1 or 26.5.1.
Is CVE-2026-58040 being exploited?
There is no known exploitation of CVE-2026-58040 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as ALPINE-CVE-2026-58040, AZL-94349, BELL-CVE-2026-58040, BIT-node-2026-58040, BIT-node-min-2026-58040, CLEANSTART-2026-DG35822 and 12 more.