CVE-2020-7693

Name: CVE-2020-7693
Creator: NVD / NIST
Published: 2020-07-09T14:15:11.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 4.98%

Last modified Jun 17, 2026

CVE-2020-7693 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 4.98% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

4.98%

91.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-755

Affected Software

Vendor	Product	Versions
Sockjs Project	Sockjs	< 0.3.20

References

https://github.com/andsnw/sockjs-dos-pyExploit, Third Party Advisory
https://github.com/sockjs/sockjs-node/commit/dd7e642cd69ee74385825816d30642c43e051d16Patch, Third Party Advisory
https://github.com/sockjs/sockjs-node/issues/252Exploit, Patch, Third Party Advisory
https://github.com/sockjs/sockjs-node/pull/265Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-575448Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-SOCKJS-575261Exploit, Third Party Advisory
https://github.com/andsnw/sockjs-dos-pyExploit, Third Party Advisory
https://github.com/sockjs/sockjs-node/commit/dd7e642cd69ee74385825816d30642c43e051d16Patch, Third Party Advisory
https://github.com/sockjs/sockjs-node/issues/252Exploit, Patch, Third Party Advisory
https://github.com/sockjs/sockjs-node/pull/265Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-575448Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-SOCKJS-575261Exploit, Third Party Advisory

Timeline

Published: Jul 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7693?

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.

How severe is CVE-2020-7693?

CVE-2020-7693 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 4.98% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7693?

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.

Are you affected by CVE-2020-7693?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST