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CVE-2020-7693

17
FAUCET Score

CVE-2020-7693 is a medium-severity vulnerability affecting the sockjs package prior to version 0.3.20, where improper handling of the 'Upgrade: websocket' header can lead to denial of service by crashing containers hosting SockJS applications. The vulnerability has a CVSS score of 5.3, indicating a network-based attack with low complexity and no user interaction required, resulting in a loss of availability. There is currently no evidence of active exploitation, nor are there publicly available exploit modules or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.3.20CPE matchmatch criteria
cpe:2.3:a:sockjs_project:sockjs:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.98%
Probability of exploitation in next 30 days
EPSS Percentile
91.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0498 is in the 88th percentile among its peer group of 23,701 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: sockjsFixed in: 0.3.20
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-prometheus-rhel9

Vendor Advisories (2)

npmGHSA-c9g6-9335-x697medium

Improper Input Validation in SocksJS-Node

Apr 13, 2021
redhatCVE-2020-7693Low

npmjs-sockjs: incorrect handling of upgrade header with the value websocket leads to DoS

Jul 3, 2020

References

github.com / andsnw/sockjs-dos-py
ExploitThird Party Advisory
github.com / sockjs/sockjs-node/commit/dd7e642cd69ee74385825816d30642c43e051d16
PatchThird Party Advisory
github.com / sockjs/sockjs-node/issues/252
ExploitPatchThird Party Advisory
github.com / sockjs/sockjs-node/pull/265
PatchThird Party Advisory
snyk.io / vuln/SNYK-JAVA-ORGWEBJARSNPM-575448
ExploitThird Party Advisory
snyk.io / vuln/SNYK-JS-SOCKJS-575261
ExploitThird Party Advisory