Vulnerability in Feathersjs Feathers
CVE-2026-27192
Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript. In versions 5.0.39 and below, origin validation uses startsWith() for comparison, allowing attackers to bypass the check by registeri…
EPSS: 0.002 (15.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Feathersjs Feathers — versions < 5.0.40
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-27192?
- CVE-2026-27192 is a high-severity vulnerability in Feathersjs Feathers, classified under Origin Validation Error. CVSS score: 8.1/10. Published 2026-02-21.
- How severe is CVE-2026-27192?
- High severity. CVSS v3 base score is 8.1 out of 10.