Regular expression denial of service (ReDoS) in ua-parser-js
Priority MEDIUM 40CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 6 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.
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).
Why it matters now
EPSS 0.03925 90th percentileScored 2026-11-07
Fix Partial ua-parser-js: 0.7.23ua-parser-js (npm): 0.7.23Red Hat: 6 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | ua-parser-js | before 0.7.23 | 0.7.23 | Patch available | CNA |
| — | ua-parser-js (npm) | before 0.7.23 | 0.7.23 | Patch available | GHSA-394c-5j6w-4xmx |
- ua-parser-js Vendor— Affected before 0.7.23 Fixed in 0.7.23 Patch available CNA
- ua-parser-js (npm) Vendor— Affected before 0.7.23 Fixed in 0.7.23 Patch available GHSA-394c-5j6w-4xmx
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ua-parser-js_project:ua-parser-js:*:*:*:*:*:node.js:*:* | before 0.7.23 | Vulnerable | Ua-parser-js Project |
| cpe:2.3:a:siemens:sinec_ins:*:*:*:*:*:*:*:* | before 1.0 | Vulnerable | Siemens |
| cpe:2.3:a:siemens:sinec_ins:1.0:-:*:*:*:*:*:* | 1.0 | Vulnerable | Siemens |
| cpe:2.3:a:siemens:sinec_ins:1.0:sp1:*:*:*:*:*:* | 1.0 sp1 | Vulnerable | Siemens |
- cpe:2.3:a:ua-parser-js_project:ua-parser-js:*:*:*:*:*:node.js:*:* Versions before 0.7.23 Vulnerable ·Ua-parser-js Project
- cpe:2.3:a:siemens:sinec_ins:*:*:*:*:*:*:*:* Versions before 1.0 Vulnerable ·Siemens
- cpe:2.3:a:siemens:sinec_ins:1.0:-:*:*:*:*:*:* Versions 1.0 Vulnerable ·Siemens
- cpe:2.3:a:siemens:sinec_ins:1.0:sp1:*:*:*:*:*:* Versions 1.0 sp1 Vulnerable ·Siemens
Remediation
- Fix · CNA ua-parser-js Fixed in 0.7.23
- Fix · GHSA-394c-5j6w-4xmx ua-parser-js (npm) Fixed in 0.7.23 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Distributed Tracing Jaeger 1 | Affected | No fix planned: Out of support scope |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 3 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 3.11 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat Storage 3 | Affected | No fix yet: Fix deferred |
Not affected: 5 products
- OpenShift Service Mesh 1
- Red Hat Ceph Storage 3
- Red Hat Ceph Storage 4
- Red Hat OpenShift Container Platform 3.11
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2020-7793
- 2026-10-03 Alias added: GHSA-394c-5j6w-4xmx
References
Sources
- CVE-2020-7793 · CVE Program
- CVE-2020-7793 · NVD
- FIRST EPSS
- GHSA-394c-5j6w-4xmx · GitHub Advisory Database · CC BY 4.0
- CVE-2020-7793 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences