CVE-2025-14874
HIGHCVE-2025-14874 is a high-severity (CVSS 7.5) CWE-703 vulnerability in org.webjars.npm:nodemailer. O3 Security confirms whether CVE-2025-14874 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Nodemailer: nodemailer: denial of service via crafted email address header
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
nodemailernpmDescription
A flaw was found in Nodemailer. This vulnerability allows a denial of service (DoS) via a crafted email address header that triggers infinite recursion in the address parser.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.webjars.npm:nodemailer | ≥ 3.0.0 | No fix |
| 📦npm | nodemailer | ≥ 3.0.0&&< 7.0.11 | 7.0.11 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.webjars.npm:nodemailer. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
No patched version of org.webjars.npm:nodemailer has shipped for CVE-2025-14874 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether CVE-2025-14874 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to CVE-2025-14874. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2025-14874 in your dependencies?
O3 detects CVE-2025-14874 across Maven, npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.