CVE-2026-82659 nodemailer before 9.0.1 File Read and SSRF via raw option
Authenticated attackers can bypass file and URL access restrictions in nodemailer to read arbitrary files or perform SSRF via raw message options.
- 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-2026-82659?
CVE-2026-82659 is a high-severity server-side request forgery 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 9.0.1 fails to apply disableFileAccess and disableUrlAccess flags to message-level raw option, allowing authenticated attackers to read arbitrary files or perform server-side request forgery by supplying path or href properties. Attackers can exploit this by crafting raw messages with file paths or URLs that bypass the intended sandbox, with fetched content delivered in the outgoing message to attacker-controlled recipients.
Weakness: CWE-73
Which versions are affected by CVE-2026-82659?
2 open source packages ship an affected version, including nodemailer.
| Package | Affected | Fixed in |
|---|---|---|
nodemailer npm | All versions | 9.0.1 |
nodemailer npm | All versions | 9.0.1 |
How do I fix CVE-2026-82659?
Upgrade nodemailer to 9.0.1 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-82659 being exploited?
There is no known exploitation of CVE-2026-82659 in the wild and no public exploit code.
Sources
Also known as CLEANSTART-2026-RJ14014, CLSA-2026-1784769504, CLSA-2026-1791667067, DEBIAN-CVE-2026-82659, ECHO-4ff8-2bb0-4808, GHSA-p6gq-j5cr-w38f and 25 more.