ua-parser-js Crypto Mining backdoor
Priority MEDIUM 41CWE-912Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-829.
Summary
A vulnerability was found in ua-parser-js 0.7.29/0.8.0/1.0.0. It has been rated as critical. This issue affects the crypto mining component which introduces a backdoor. Upgrading to version 0.7.30, 0.8.1 and 1.0.1 is able to address this issue. It is recommended to upgrade the affected component.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01518 74th percentileScored 2026-11-07
Fix Fixed ua-parser-js (npm): 0.7.30, 0.8.1, 1.0.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| unspecified | ua-parser-js | 0.7.29; 0.8.0; 1.0.0 | — | No fix listed | CNA |
| — | ua-parser-js (npm) | 0.7.29 to before 0.7.30 | 0.7.30 | Patch available | GHSA-pjwm-rvh2-c87w |
| — | ua-parser-js (npm) | 0.8.0 to before 0.8.1 | 0.8.1 | Patch available | GHSA-pjwm-rvh2-c87w |
| — | ua-parser-js (npm) | 1.0.0 to before 1.0.1 | 1.0.1 | Patch available | GHSA-pjwm-rvh2-c87w |
- ua-parser-js Vendorunspecified Affected 0.7.29; 0.8.0; 1.0.0 Fixed in — No fix listed CNA
- ua-parser-js (npm) Vendor— Affected 0.7.29 to before 0.7.30 Fixed in 0.7.30 Patch available GHSA-pjwm-rvh2-c87w
- ua-parser-js (npm) Vendor— Affected 0.8.0 to before 0.8.1 Fixed in 0.8.1 Patch available GHSA-pjwm-rvh2-c87w
- ua-parser-js (npm) Vendor— Affected 1.0.0 to before 1.0.1 Fixed in 1.0.1 Patch available GHSA-pjwm-rvh2-c87w
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.7.29:*:*:*:*:node.js:*:* | 0.7.29 | Vulnerable | Ua-parser-js Project |
| cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.8.0:*:*:*:*:node.js:*:* | 0.8.0 | Vulnerable | Ua-parser-js Project |
| cpe:2.3:a:ua-parser-js_project:ua-parser-js:1.0.0:*:*:*:*:node.js:*:* | 1.0.0 | Vulnerable | Ua-parser-js Project |
- cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.7.29:*:*:*:*:node.js:*:* Versions 0.7.29 Vulnerable ·Ua-parser-js Project
- cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.8.0:*:*:*:*:node.js:*:* Versions 0.8.0 Vulnerable ·Ua-parser-js Project
- cpe:2.3:a:ua-parser-js_project:ua-parser-js:1.0.0:*:*:*:*:node.js:*:* Versions 1.0.0 Vulnerable ·Ua-parser-js Project
Remediation
- Fix · GHSA-pjwm-rvh2-c87w ua-parser-js (npm) Fixed in 0.7.30 Advisory →
- Fix · GHSA-pjwm-rvh2-c87w ua-parser-js (npm) Fixed in 0.8.1 Advisory →
- Fix · GHSA-pjwm-rvh2-c87w ua-parser-js (npm) Fixed in 1.0.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-4229
- 2026-10-03 Alias added: GHSA-pjwm-rvh2-c87w
References
More Ua-parser-js Project Ua-parser-js vulnerabilities
- TI-2022-09474 Regular expression denial of service in ua-parser-js CVSS 3.1HIGH 7.5
- TI-2026-35563 UAParser.js: Unbounded `Sec-CH-UA-Model` parsing can trigger ReDoS in `withClientHints()` CVSS 3.1MEDIUM 5.3
- TI-2020-06309 Regular expression denial of service (ReDoS) in ua-parser-js CVSS 3.1HIGH 7.5
- TI-2020-06251 Regular expression denial of service (ReDoS) in ua-parser-js CVSS 3.1HIGH 7.5
- TI-2021-08826 ua-parser-js >= 0.7.14, fixed in 0.7.24, uses a regular expression which is vulnerable to… CVSS 3.1HIGH 7.5
Sources
- CVE-2021-4229 · CVE Program
- CVE-2021-4229 · NVD
- FIRST EPSS
- GHSA-pjwm-rvh2-c87w · GitHub Advisory Database · CC BY 4.0
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