CVE-2026-82660 Nodemailer jsonTransport bypasses disableFileAccess and disableUrlAccess
Attackers can bypass file and URL access restrictions in Nodemailer's jsonTransport to read local files or fetch remote URLs.
- 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-2026-82660?
CVE-2026-82660 is a medium-severity vulnerability in nodemailer, published on 31 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Nodemailer before 8.0.9 fails to enforce disableFileAccess and disableUrlAccess options during message normalization in jsonTransport. Attackers can read local files or fetch URLs by supplying path or href values in message content fields, bypassing intended access controls.
Weakness: CWE-862
Which versions are affected by CVE-2026-82660?
2 open source packages ship an affected version, including nodemailer.
| Package | Affected | Fixed in |
|---|---|---|
nodemailer npm | All versions | 8.0.9 |
nodemailer npm | All versions | 8.0.9 |
How do I fix CVE-2026-82660?
Upgrade nodemailer to 8.0.9 or later.
Is CVE-2026-82660 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82660 exists.
Sources
Also known as DEBIAN-CVE-2026-82660, ECHO-8b83-0589-b27b, GHSA-28mw-fm9r-fxjg, GHSA-wqvq-jvpq-h66f, MINI-48wg-wvxf-2v2x, MINI-6jgw-p42x-jf9g and 16 more.