CVE Explorer
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 registering a domain that shares a common prefix with an allowed origin.The getAllowedOrigin() function checks if the Referer header starts with any allowed origin, and this comparison is insufficient as it only validates the prefix. This is exploitable when the origins
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"feathers","vendor":"feathersjs","versions":[{"status":"affected","version":"< 5.0.40"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:75e10f4b3f9b0f37f51268502c9299eb7924e150664ed9f56cd758845ce47e0c · sha256:7cfe681af1742134… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.6,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:75e10f4b3f9b0f37f51268502c9299eb7924e150664ed9f56cd758845ce47e0c · sha256:7cfe681af1742134… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-346","description":"CWE-346: Origin Validation Error","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:75e10f4b3f9b0f37f51268502c9299eb7924e150664ed9f56cd758845ce47e0c · sha256:7cfe681af1742134… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/feathersjs/feathers/commit/ee19a0ae9bc2ebf23b1fe598a1f7361981b65401","tags":["x_refsource_MISC"],"url":"https://github.com/feathersjs/feathers/commit/ee19a0ae9bc2ebf23b1fe598a1f7361981b65401"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:75e10f4b3f9b0f37f51268502c9299eb7924e150664ed9f56cd758845ce47e0c · sha256:7cfe681af1742134… · /containers/cna/references/1
{"name":"https://github.com/feathersjs/feathers/releases/tag/v5.0.40","tags":["x_refsource_MISC"],"url":"https://github.com/feathersjs/feathers/releases/tag/v5.0.40"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:75e10f4b3f9b0f37f51268502c9299eb7924e150664ed9f56cd758845ce47e0c · sha256:7cfe681af1742134… · /containers/cna/references/2
{"name":"https://github.com/feathersjs/feathers/security/advisories/GHSA-mp4x-c34x-wv3x","tags":["x_refsource_CONFIRM"],"url":"https://github.com/feathersjs/feathers/security/advisories/GHSA-mp4x-c34x-wv3x"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:75e10f4b3f9b0f37f51268502c9299eb7924e150664ed9f56cd758845ce47e0c · sha256:7cfe681af1742134… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.