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VulnerabilityPublished Updated

CVE-2025-13033: Nodemailer · Email to an unintended domain can occur due to Interpretation Conflict

Affects nodemailerSource GCVE Database

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Authoritative record:CVE-2025-13033· High 7.5

Not known to be exploited · CVSS 7.5 High : upgrade to 7.0.7 soon.

Data as of 13 Nov 2026, 19:28 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 7.0.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Nov 2025

  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

Upgrade nodemailer to 7.0.7.

Affected software

ProductAffectedFixed in
npmnodemailerAffected
  • <7.0.7
Fixed in
  • 7.0.7

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

AI-suggested

A patch is available in Nodemailer version 7.0.7 that fixes the parsing logic to correctly handle quoted local-parts per RFC 5321/5322. Users should upgrade to version 7.0.7 or later. Currently, no alternative mitigations exist. It is recommended to reject local-parts containing embedded '@' characters unless fully compliant with quoting rules.

Description

Nodemailer contains a vulnerability in its email parsing logic where quoted local-parts containing '@' characters are improperly handled. This causes emails to be misrouted to unintended external domains instead of the intended recipient, violating RFC 5321/5322 standards. The flaw can lead to data leakage, filter evasion, and bypass of domain-based access controls in downstream applications. The vulnerability affects Nodemailer versions prior to 7.0.7 and has been fixed in version 7.0.7.

References

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