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CVE-2020-7693

MediumPublished

Denial of Service (DoS)

Published: Jul 9, 2020
Updated: Sep 17, 2024
Assigning CNA: snyk
Evidence observed: Aug 8, 2026

Primary CVSS

5.3/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS probability estimate

5.0%

Low · next 30 days

Percentile: 91.9%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Incorrect handling of Upgrade header with the value websocket leads in crashing of containers hosting sockjs apps. This affects the package sockjs before 0.3.20.

Sources

sockjs-dos-pyPoC
CVE-2020-7693: SockJS 0.3.19 Denial of Service POC
CVE-2020-7693PoC
POC For CVE-2020-7693 (Testing on Version [email protected])

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