Vulnerability · Published Jan 7, 2021 · Assigned by mitre
CVE-2020-36048
High 7.5
In plain English
A high-severity security flaw in the engine.io package (npm). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.3% (higher than 88% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)3.3%top 11.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | engine.io | 3.6.0 | GHSA-j4f2-536g-r55m |
Affected products (as reported)
References
- https://github.com/socketio/engine.io/commit/734f9d1268840722c41219e69eb58318e0b2ac6b x_refsource_MISC
- https://blog.caller.xyz/socketio-engineio-dos/ x_refsource_MISC
- https://github.com/bcaller/kill-engine-io x_refsource_MISC