Service crash via unbounded nested-group recursion
Published Dec 18, 2025 · Updated Dec 18, 2025
Uncontrolled recursion in Nodemailer before 7.0.11 allows remote attackers to crash a service via a deeply nested email address header. The addressparser and _handleAddress nested-group flattening path recursively reparses attacker-controlled group members without limiting depth. No authentication or user interaction is required when an affected application accepts attacker-controlled address fields, and stack exhaustion terminates its Node.js process.
Summary
What happened
Uncontrolled recursion in Nodemailer before 7.0.11 allows remote attackers to crash a service via a deeply nested email address header. The addressparser and _handleAddress nested-group flattening path recursively reparses attacker-controlled group members without limiting depth. No authentication or user interaction is required when an affected application accepts attacker-controlled address fields, and stack exhaustion terminates its Node.js process.
The record
- CVE
- CVE-2025-14874
- Published
- Dec 18, 2025
- Updated
- Dec 18, 2025
- Vendor
- 389 Directory Server
- Product
- Red Hat Developer Hub
- Classifications
- CWE-703, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 18, 2025CVE publishedPublication date reported by the CVE source.
- Dec 18, 2025Record 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?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
- Upstream deeply nested address-group reproductionproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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