CVE-2026-90776
Last modified
CVE-2026-90776 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Nodemailer versions 9.1.0 through 10.0.4 contain a quadratic time complexity vulnerability in the addressparser component when parsing email addresses with RFC 5322 comments. Attackers can craft malicious email headers with comment-separated atoms to consume excessive CPU and block the Node.js event loop for several seconds, causing denial of service.. EPSS estimates a 0.48% chance of exploitation in the next 30 days.
Description
Nodemailer versions 9.1.0 through 10.0.4 contain a quadratic time complexity vulnerability in the addressparser component when parsing email addresses with RFC 5322 comments. Attackers can craft malicious email headers with comment-separated atoms to consume excessive CPU and block the Node.js event loop for several seconds, causing denial of service.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| nodemailer | nodemailer | >= 9.1.0, < 10.0.5 |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-90776?
How severe is CVE-2026-90776?
How do I fix CVE-2026-90776?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-90770Spug through 3.4.0 contains a remote code execution vulnerab…8.8
- CVE-2026-90771joi before versions 17.13.8 and 18.2.9 contains a prototype …3.7
- CVE-2026-90772Amundsen frontend through 4.3.0 renders table, dashboard, an…7.6
- CVE-2026-90773procs through 0.14.12 fails to sanitize escape sequences in …3.2
- CVE-2026-90774rustypaste before 0.18.1 validates the destination path befo…7.5
- CVE-2026-90775PostGIS address_standardizer through 3.7.0 fails to validate…6.5
- CVE-2026-90777ESPnet before 202609 deserializes pretrained model checkpoin…8.8
- CVE-2026-90778SIPp through 3.7.7 contains a buffer overflow vulnerability …7.5
- CVE-2026-90779SIPp through 3.7.7 contains a stack buffer overflow vulnerab…7.5
- CVE-2026-9078Firefox for iOS displayed specially crafted right-to-left (R…5.4
- CVE-2026-90780SIPp through 3.7.7 contains a buffer overflow vulnerability …7.5
- CVE-2026-90781alsa-lib through 1.2.16.1 contains a stack buffer overflow i…4.4
Are you affected by CVE-2026-90776?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST