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Fencer Intel
high 7.5

CVE-2020-7793 json

Regular Expression Denial of Service (ReDoS)

published 5y ago modified 4mo ago also GHSA-394c-5j6w-4xmx , EUVD-2022-0786

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.9%
EPSS 3.9% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

The package ua-parser-js before 0.7.23 are vulnerable to Regular Expression Denial of Service (ReDoS) in multiple regexes (see linked commit for more info).

Patch / fix

  • npm ua-parser-js 0.7.23
  • n/a ua-parser-js 0.7.23
  • node-ua-parser-js Debian 14, Debian 13, Debian 12 0.7.23+ds-1

debian advisories DEBIAN-CVE-2020-7793

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-7793 updated cvss 7.5

nodejs-ua-parser-js: ReDoS in multiple regexes

  • Red Hat Distributed Tracing Jaeger 1 distributed-tracing/jaeger-query-rhel7, distributed-tracing/jaeger-all-in-one-rhel7
    affected: no fix planned “Out of support scope”
  • Red Hat Advanced Cluster Management for Kubernetes 2 nodejs-ua-parser-js Red Hat Ceph Storage 3 grafana-container Red Hat OpenShift Container Platform 3.11 kibana
    affected: no fix available “Fix deferred”
  • Red Hat OpenShift Container Platform 4 kibana, openshift4/ose-logging-kibana6
    affected: no fix available, no fix planned “Will not fix”
  • Red Hat Storage 3 grafana
    affected: no fix available “Fix deferred”
  • Red Hat OpenShift Service Mesh 1 servicemesh-grafana, servicemesh-grafana-prometheus Red Hat Ceph Storage 3 grafana Red Hat Ceph Storage 4 rhceph/rhceph-4-dashboard-rhel8 Red Hat OpenShift Container Platform 3.11 openshift3/grafana Red Hat OpenShift Container Platform 4 openshift4/ose-grafana
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.93% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • snyk.io https://snyk.io/vuln/SNYK-JS-UAPARSERJS-1023599 referenced PoC, tagged "exploit" by a source, unverified
  • snyk.io https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1050387 referenced PoC, tagged "exploit" by a source, unverified
  • snyk.io https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBFAISALMAN-1050388 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
npm ua-parser-js
<0.7.23
0.7.23

Affected products

  • n/a ua-parser-js

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.