Medium severity · published Aug 31, 2026
CVE-2026-82660
Nodemailer jsonTransport bypasses disableFileAccess and disableUrlAccess
5.4
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NO
nodemailer · nodemailer
before 8.0.9 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-82660
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-82660
github.com
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-wqvq-jvpq-h66f
www.vulncheck.com
https://www.vulncheck.com/advisories/nodemailer-jsontransport-bypasses-disablefileaccess-and-disableurlaccess
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