What is CVE-2026-82659?

CVE-2026-82659 is a high-severity vulnerability in Nodemailer, classified under External Control of File Name or Path. CVSS score: 7.1/10. Published 2026-08-31.

How severe is CVE-2026-82659?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Nodemailer

CVE-2026-82659

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.

EPSS: 0.003 (16.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.

Affected products

Nodemailer

Weakness classification (CWE)

CWE-73 — External Control of File Name or Path

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-82659?: CVE-2026-82659 is a high-severity vulnerability in Nodemailer, classified under External Control of File Name or Path. CVSS score: 7.1/10. Published 2026-08-31.
How severe is CVE-2026-82659?: High severity. CVSS v3 base score is 7.1 out of 10.