Nodemailer: nodemailer: email to an unintended domain can occur due to interpretation conflict
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 2 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| nodemailer | nodemailer | before 7.0.7 | 7.0.7 | Patch available | CNA |
| Red Hat | Red Hat Ceph Storage 8.1 | — | 1777566546 | Patch available | CNA |
| Red Hat | Red Hat Developer Hub 1.9 | — | 1772573159 | Patch available | CNA |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2 | — | — | No fix listed | CNA |
| — | nodemailer (npm) | before 7.0.7 | 7.0.7 | Patch available | GHSA-mm7p-fcc7-pg87 |
- nodemailer Vendornodemailer Affected before 7.0.7 Fixed in 7.0.7 Patch available CNA
- Red Hat Ceph Storage 8.1 VendorRed Hat Affected — Fixed in 1777566546 Patch available CNA
- Red Hat Developer Hub 1.9 VendorRed Hat Affected — Fixed in 1772573159 Patch available CNA
- Red Hat Advanced Cluster Management for Kubernetes 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- nodemailer (npm) Vendor— Affected before 7.0.7 Fixed in 7.0.7 Patch available GHSA-mm7p-fcc7-pg87
Remediation
- Fix · CNA nodemailer (nodemailer) Fixed in 7.0.7
- Fix · GHSA-mm7p-fcc7-pg87 nodemailer (npm) Fixed in 7.0.7 Advisory →
Red Hat 2 advisories
- RHSA-2026:15979 Released 2026-05-11 · Red Hat rating ImportantRed Hat Ceph Storage
- Red Hat Ceph Storage 8.1 registry.redhat.io/rhceph/grafana-rhel9
- RHSA-2026:3751 Released 2026-03-04 · Red Hat rating ModerateRed Hat Developer Hub 1.9.0 release.
- Red Hat Developer Hub 1.9 registry.redhat.io/rhdh/rhdh-hub-rhel9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet |
| Red Hat Ceph Storage 8.1 | Fixed | RHSA-2026:15979 |
| Red Hat Developer Hub 1.9 | Fixed | RHSA-2026:3751 |
Not affected: 2 products
- Red Hat Ceph Storage 8.1
- Red Hat Developer Hub 1.9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-13033
- 2026-10-03 Alias added: GHSA-mm7p-fcc7-pg87
References
More nodemailer vulnerabilities
- TI-2026-74559 ReDoS in Nodemailer SMTP AUTH mechanism detection regexes CVSS 4.0HIGH 8.7
- TI-2026-64856 nodemailer before 10.0.6 Denial of Service via addressparser CVSS 4.0HIGH 8.7
- TI-2026-62452 Nodemailer before 9.1.0 Denial of Service via addressparser CVSS 4.0HIGH 8.7
- TI-2026-61683 Nodemailer 9.1.0 through 10.0.4 Denial of Service via Quadratic Address Parsing CVSS 4.0HIGH 8.7
- TI-2025-13566 Nodemailer: nodemailer: denial of service via crafted email address header CVSS 3.1HIGH 7.5
- TI-2026-74560 Nodemailer address parser passes illegal characters to SMTP envelope CVSS 4.0MEDIUM 6.9
Sources
- CVE-2025-13033 · CVE Program
- CVE-2025-13033 · NVD
- FIRST EPSS
- GHSA-mm7p-fcc7-pg87 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-13033 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences