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TI-2018-14286 Aliases CVE-2018-20164GHSA-fx7m-j728-mjw3

An issue was discovered in regex.yaml (aka regexes.yaml) in UA-Parser UAP-Core before…

Priority LOW 30CWE-185Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub.

Summary

An issue was discovered in regex.yaml (aka regexes.yaml) in UA-Parser UAP-Core before 0.6.0. A Regular Expression Denial of Service (ReDoS) issue allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to a value containing a long digit string. (The UAP-Core project contains the vulnerability, propagating to all implementations.)

Why it matters now

EPSS 0.03298 88th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed uap-core (npm): 0.6.0

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—uap-core (npm)before 0.6.00.6.0Patch availableGHSA-fx7m-j728-mjw3
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • uap-core (npm) Vendor— Affected before 0.6.0 Fixed in 0.6.0 Patch available GHSA-fx7m-j728-mjw3

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:uaparser:user_agent_parser-core:*:*:*:*:*:*:*:*before 0.6.0Vulnerableua-parser
  • cpe:2.3:a:uaparser:user_agent_parser-core:*:*:*:*:*:*:*:* Versions before 0.6.0 Vulnerable ·ua-parser

Remediation

  • Fix · GHSA-fx7m-j728-mjw3 uap-core (npm) Fixed in 0.6.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-20164
  2. 2026-10-03 Alias added: GHSA-fx7m-j728-mjw3

References

Exploit 1

Patch 2

Advisory 1

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences