CVE-2020-36048
HIGHCVSS 7.5/10EPSS 3.33%
Last modified
CVE-2020-36048 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Engine.IO before 4.0.0 allows attackers to cause a denial of service (resource consumption) via a POST request to the long polling transport.. EPSS estimates a 3.33% chance of exploitation in the next 30 days.
Description
Engine.IO before 4.0.0 allows attackers to cause a denial of service (resource consumption) via a POST request to the long polling transport.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Socket | Engine.Io | < 4.0.0 |
References
- https://blog.caller.xyz/socketio-engineio-dos/Exploit, Third Party Advisory
- https://github.com/bcaller/kill-engine-ioThird Party Advisory
- https://github.com/socketio/engine.io/commit/734f9d1268840722c41219e69eb58318e0b2ac6bPatch, Third Party Advisory
- https://blog.caller.xyz/socketio-engineio-dos/Exploit, Third Party Advisory
- https://github.com/bcaller/kill-engine-ioThird Party Advisory
- https://github.com/socketio/engine.io/commit/734f9d1268840722c41219e69eb58318e0b2ac6bPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-36048?
Engine.IO before 4.0.0 allows attackers to cause a denial of service (resource consumption) via a POST request to the long polling transport.
How severe is CVE-2020-36048?
CVE-2020-36048 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.33% probability of exploitation in the next 30 days.
How do I fix CVE-2020-36048?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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.
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Are you affected by CVE-2020-36048?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST