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CVE-2017-16030
Useragent is used to parse useragent headers. It uses several regular expressions to accomplish this. An attacker could edit their own…
High7.5EPSS 1.1%
- Published
- Updated
- Reserved
- Assigned by
- hackerone
Description
Useragent is used to parse useragent headers. It uses several regular expressions to accomplish this. An attacker could edit their own headers, creating an arbitrarily long useragent string, causing the event loop and server to block. This affects Useragent 2.1.12 and earlier.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.1% · top 33% of all CVEs (4 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
HackerOne · useragent node module
- affected <=2.1.12
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmuseragentGHSA-pjmx-9xr3-82qr (opens in a new tab)
References (1)
- https://nodesecurity.io/advisories/312 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-pjmx-9xr3-82qr (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2017-16030)Record last updated .