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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| snykCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O |
| NVDNVD · Modified | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
- EPSS (exploitation in 30 days)
- 5.0% · top 7.8% of all CVEs (5 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
- Denial of Service (DoS)
- CWE-755 (opens in a new tab)All about CWE-755 and its CVEs
Affected products
sockjs
- affected unspecified – < 0.3.20
Affected packages
From reviewed advisories of the GitHub Advisory Database.
References (6)
- https://snyk.io/vuln/SNYK-JS-SOCKJS-575261 (opens in a new tab)x_refsource_MISCx_transferred
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-575448 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/sockjs/sockjs-node/issues/252 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/sockjs/sockjs-node/pull/265 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/andsnw/sockjs-dos-py (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/sockjs/sockjs-node/commit/dd7e642cd69ee74385825816d30642c43e051d16 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-c9g6-9335-x697 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-7693)Record last updated .