CVE-2026-92595Public exploitNetwork attack vector

File disclosure and SSRF via discarded sandbox options

Published Sep 16, 2026 · Updated Sep 19, 2026

Sandbox bypass in Nodemailer 9.1.0 and earlier allows remote authenticated users to read local files or make outbound HTTP(S) requests. MailMessage.resolveContent() passes the legacy three-argument call to shared.resolveContent(), which replaces the missing options with an empty object and skips file and URL access guards. Exploitation requires enabled sandbox flags, attacker-influenced content, and plugin or application code that calls the legacy API; the normal sendMail path remains protected.

CVSS severity6.0
Medium
EPSS probability0.29%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sandbox bypass in Nodemailer 9.1.0 and earlier allows remote authenticated users to read local files or make outbound HTTP(S) requests. MailMessage.resolveContent() passes the legacy three-argument call to shared.resolveContent(), which replaces the missing options with an empty object and skips file and URL access guards. Exploitation requires enabled sandbox flags, attacker-influenced content, and plugin or application code that calls the legacy API; the normal sendMail path remains protected.

The record

CVE
CVE-2026-92595
Published
Sep 16, 2026
Updated
Sep 19, 2026
Vendor
Nodemailer
Product
Nodemailer
Classifications
CWE-73, CWE-918, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <9.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nodemailer · Nodemailerversion=0 <9.1.1

Published CVSS scores

6.0VulnCheck CNACVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
5.9VulnCheck CNACVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-73External Control of File Name or Path
CWE-918Server-Side Request Forgery (SSRF)
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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