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Fencer Vulns
high 7.5

CVE-2025-13033 json

Nodemailer: nodemailer: email to an unintended domain can occur due to interpretation conflict

published 2025-10-07 13 mo ago modified 2026-10-18 21 d ago also GHSA-mm7p-fcc7-pg87 , EUVD-2025-32092

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

A vulnerability was identified in the email parsing library due to improper handling of specially formatted recipient email addresses. An attacker can exploit this flaw by crafting a recipient address that embeds an external address within quotes. This causes the application to misdirect the email to the attacker's external address instead of the intended internal recipient. This could lead to a significant data leak of sensitive information and allow an attacker to bypass security filters and access controls.

Patch / fix

  • npm nodemailer 7.0.7
  • nodemailer nodemailer 7.0.7
  • Red Hat Red Hat Ceph Storage 8.1 1777566546
  • Red Hat Red Hat Developer Hub 1.9 1772573159
  • node-nodemailer Debian 13 6.10.0+~6.4.17-1+deb13u1
  • node-nodemailer Debian 14 7.0.9+~7.0.2-1

debian advisories DEBIAN-CVE-2025-13033

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-13033 updated cvss 7.5

nodemailer: Nodemailer: Email to an unintended domain can occur due to Interpretation Conflict

  • Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/acm-grafana-rhel9
    affected: workaround, no fix available “Currently there's no available mitigation for this flaw.”
  • Red Hat Ceph Storage 8.1 rhceph 1777566546
    fixed: vendor fix “Currently there's no available mitigation for this flaw.” RHSA-2026:15979
  • Red Hat Developer Hub 1.9 rhdh 1772573159
    fixed: vendor fix “Currently there's no available mitigation for this flaw.” RHSA-2026:3751
  • Red Hat Ceph Storage 8.1 rhceph 1777566148, rhceph 1777566201, rhceph 1777566519, rhceph 1777566772, rhceph 1777567370, rhceph 1778049929 Red Hat Developer Hub 1.9 rhdh 1772575881, rhdh 1772578053
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
11 mo ago

Exploit prediction

0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
npm nodemailer
<7.0.7
7.0.7

Affected products

  • nodemailer nodemailer
  • Red Hat Red Hat Ceph Storage 8.1
  • Red Hat Red Hat Developer Hub 1.9
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2

Classification

Weakness
  • CWE-1286 Improper Validation of Syntactic Correctness of Input
  • CWE-20 Improper Input Validation
  • CWE-436 Interpretation Conflict

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.