Uncontrolled resource consumption in HackerOne ua-parser node module
Priority MEDIUM 44CWE-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
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-400.
Summary
ua-parser is a port of Browserscope's user agent parser. ua-parser is vulnerable to a ReDoS (Regular Expression Denial of Service) attack when given a specially crafted UserAgent header.
Why it matters now
EPSS 0.09102 95th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| HackerOne | ua-parser node module | All versions | — | No fix listed | CNA |
| — | ua-parser (npm) | up to 0.3.5 | — | No fix listed | GHSA-pmg9-p9r2-6q87 |
- ua-parser node module VendorHackerOne Affected All versions Fixed in — No fix listed CNA
- ua-parser (npm) Vendor— Affected up to 0.3.5 Fixed in — No fix listed GHSA-pmg9-p9r2-6q87
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ua-parser_project:ua-parser:*:*:*:*:*:node.js:*:* | all versions | Vulnerable | Ua-parser Project |
- cpe:2.3:a:ua-parser_project:ua-parser:*:*:*:*:*:node.js:*:* Versions all versions Vulnerable ·Ua-parser Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-16086
- 2026-10-03 Alias added: GHSA-pmg9-p9r2-6q87
References
Sources
- CVE-2017-16086 · CVE Program
- CVE-2017-16086 · NVD
- FIRST EPSS
- GHSA-pmg9-p9r2-6q87 · GitHub Advisory Database · CC BY 4.0
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