Resource exhaustion in Socket Engine.io
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.032 (87.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/socketio/engine.io/commit/734f9d1268840722c41219e69eb58318e0b2ac6b (Patch, Third Party Advisory)
- blog.caller.xyz/socketio-engineio-dos/ (Exploit, Third Party Advisory)
- github.com/bcaller/kill-engine-io (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-36048?
- CVE-2020-36048 is a high-severity vulnerability in Socket Engine.io, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2021-01-08.
- How severe is CVE-2020-36048?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-36048 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.