CVE-2025-13033Public exploitNetwork attack vector

Email disclosure via quoted-address recipient misrouting

Published Nov 14, 2025 · Updated May 11, 2026

Interpretation conflict in Nodemailer before 7.0.7 allows remote attackers to misroute email to an unintended external address. The addressparser fallback treats an address-like token inside a quoted local-part as the recipient instead of preserving the RFC-compliant outer domain. Exploitation requires control of a destination-address input and can disclose message content or bypass domain-based filters in consuming applications.

CVSS severity7.5
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Interpretation conflict in Nodemailer before 7.0.7 allows remote attackers to misroute email to an unintended external address. The addressparser fallback treats an address-like token inside a quoted local-part as the recipient instead of preserving the RFC-compliant outer domain. Exploitation requires control of a destination-address input and can disclose message content or bypass domain-based filters in consuming applications.

The record

CVE
CVE-2025-13033
Published
Nov 14, 2025
Updated
May 11, 2026
Vendor
389 Directory Server
Product
Red Hat Developer Hub
Classifications
CWE-436, CWE-20, CWE-1286, T1048
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 14, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

389 Directory Server · Red Hat Developer HubAffected versions are unavailable in this record.
389 Directory Server · Red Hat Advanced Cluster Management for KubernetesAffected versions are unavailable in this record.
389 Directory Server · Red Hat Ceph Storage 8.1Affected versions are unavailable in this record.
Nodemailer · Nodemailerversion=0 <7.0.7

Published CVSS scores

5.5GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
7.5Red HatCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-436Interpretation Conflict
CWE-20Improper Input Validation
CWE-1286Improper Validation of Syntactic Correctness of Input
T1048Exfiltration Over Alternative Protocol

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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