CVE-2024-58379

nodemailer before 6.9.9 ReDoS via attachDataUrls parameter

MEDIUM
5.3
CVSS Score
Published: August 31, 2026 at 08:46 AM UTC
Updated: October 27, 2026 at 11:10 PM UTC
1 product affected across 1 vendorNodemailer

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

nodemailer before 6.9.9 contains a regular expression denial of service vulnerability in email parsing when attachDataUrls parameter is set or processing embedded file attachments. Attackers can send specially crafted emails with malicious data URLs or embedded attachments to cause the event loop to hang and deny service.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 6.9.9
Vendor states this is fixed in 6.9.9 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-1333

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