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.
CVE-2020-7693
This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 16.0%, top 5% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.3
- EG Score
- 5.3(medium)
- EPSS
- 91.2%
- KEV
- Not listed
Published
July 9, 2020
Last Modified
November 21, 2024
References (12)
- report@snykhttps://github.com/andsnw/sockjs-dos-py
- report@snykhttps://github.com/sockjs/sockjs-node/commit/dd7e642cd69ee74385825816d30642c43e051d16
- report@snykhttps://github.com/sockjs/sockjs-node/issues/252
- report@snykhttps://github.com/sockjs/sockjs-node/pull/265
- report@snykhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-575448
- report@snykhttps://snyk.io/vuln/SNYK-JS-SOCKJS-575261
- af854a3a-2127-422b-91ae-364da2661108https://github.com/andsnw/sockjs-dos-py
- af854a3a-2127-422b-91ae-364da2661108https://github.com/sockjs/sockjs-node/commit/dd7e642cd69ee74385825816d30642c43e051d16
- af854a3a-2127-422b-91ae-364da2661108https://github.com/sockjs/sockjs-node/issues/252
- af854a3a-2127-422b-91ae-364da2661108https://github.com/sockjs/sockjs-node/pull/265
- af854a3a-2127-422b-91ae-364da2661108https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-575448
- af854a3a-2127-422b-91ae-364da2661108https://snyk.io/vuln/SNYK-JS-SOCKJS-575261
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| sockjs | — | 0.3.20 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 46× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-12 05:44 UTCEPSS rescore
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- 2026-06-25 13:48 UTCEPSS rescore
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- 2026-05-27 01:32 UTCEG score recompute
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- 2026-05-26 07:17 UTCEPSS rescore
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Related CVEs(same CWE)
Same CWE
10 shownCWE-755
- CVE-2009-5043EG 9.8CRITICAL
- CVE-2019-17195EG 9.8EPSS 95%CRITICAL
- CVE-2019-14431EG 9.8CRITICAL
- CVE-2019-12815EG 9.8EPSS 99%CRITICAL
- CVE-2019-6256EG 9.8CRITICAL
- CVE-2018-19991EG 9.8CRITICAL
- CVE-2017-2877EG 9.8CRITICAL
- CVE-2017-5638EG 9.8 KEVEPSS 100%CRITICAL
- CVE-2019-14287NVD 8.8EG 9.0EPSS 99%HIGH
- CVE-2018-0155NVD 8.6EG 9.0 KEVEPSS 94%HIGH
Frequently asked(5)
What is CVE-2020-7693?
When was CVE-2020-7693 disclosed?
Is CVE-2020-7693 actively exploited?
What is the CVSS score of CVE-2020-7693?
How do I remediate CVE-2020-7693?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-7693
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