Skip to main content
CVE-2026-125755VulnerabilityPublished Updated

Node nodemailer: Nodemailer 3.0.0 before 10.4.1 contains an address parsing flaw in addressparser that truncates

Affects node-nodemailerSource GCVE Database

0
Compare
Authoritative record:CVE-2026-125755· High 8.3

Not known to be exploited · CVSS 8.3 High · fixed in 10.4.1 : patch node-nodemailer soon.

Data as of 13 Nov 2026, 22:33 UTC

CVSS 4.0 base score
8.3High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.08.3
CNA (VulnCheck)CVSS 3.16.5
Patch
Available – fixed in 10.4.1
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10node-nodemailerpkg:deb/ubuntu/node-nodemailer?arch=source&distro=stonkingOther threatsAffected
  • 8.0.4+~7.0.11-1 – 9.0.5+~8.0.1-1
5 affected builds
Fixed in–
Ubuntu 26.04 LTSnode-nodemailerpkg:deb/ubuntu/node-nodemailer?arch=source&distro=resoluteOther threatsAffected
  • 7.0.5+~7.0.1-1 – 8.0.4+~7.0.11-1
5 affected builds
Fixed in–
Ubuntu 24.04 LTSnode-nodemailerpkg:deb/ubuntu/node-nodemailer?arch=source&distro=nobleOther threatsAffected
  • =6.9.4+~6.4.9-2
  • =6.9.4+~6.4.9-3ubuntu1
  • =6.9.4+~6.4.9-4
Fixed in–
Ubuntu 22.04 LTSnode-nodemailerpkg:deb/ubuntu/node-nodemailer?arch=source&distro=jammyOther threatsAffected
  • 6.4.17-3 – 6.7.1+~6.4.4-1
4 affected builds
Fixed in–
Ubuntu 20.04 LTSnode-nodemailerpkg:deb/ubuntu/node-nodemailer?arch=source&distro=focalOther threatsAffected
  • 6.3.0-2 – 6.4.5-1
6 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

The vulnerability is fixed in Nodemailer version 10.4.1 and later. Users should upgrade to version 10.4.1 or newer to remediate this issue. No other mitigations are indicated.

Description

Nodemailer versions before 10.4.1 contain an address parsing flaw in the addressparser component that truncates domains at folding whitespace or comments before a dot. This flaw allows attackers to bypass recipient domain restrictions by submitting crafted email addresses in to, cc, bcc, or replyTo fields that appear valid per RFC 5322 domain checks but actually deliver mail to attacker-controlled addresses under the application's sender identity.

References

Community reviews

Loading reviews…