lowCVSS 5.4Vulnerability
CVE-2026-94486
The Next.js development server (`next dev`) exposes a Model Context Protocol endpoint that does not verify which website a request originates from, allowing a malicious website visited by the developer to read sensitive development data — including the project's location on disk, source code snippets from error reports, the route inventory, and development logs. Only applications run with `next dev` are affected. Production deployments do not serve this endpoint.
Properties
- summary
- Next.js has information disclosure in development server's Model Context Protocol endpoint
- severity
- low
- cvss_score
- 5.4
- retrieved_at
- 2026-10-07T22:35:46+00:00
- ghsa_published
- 2026-10-07T20:31:51Z
- source_url
- https://github.com/advisories/GHSA-39w2-rjm5-chcv
- ghsa_updated
- 2026-10-07T20:31:52Z
- ghsa_id
- GHSA-39w2-rjm5-chcv
- last_source
- GitHub Advisory Database
- cve_id
- CVE-2026-94486
- cvss_vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- signal_observed_at
- 2026-10-07T22:35:46+00:00
- is_ghsa_only
- false
Related Entities (4)
HAS_WEAKNESS (1)
→[Weakness]Origin Validation Error
REPORTED_BY (1)
→[Source]GitHub Advisory Database
VULNERABLE_TO (1)
←[Software]npm/next
AFFECTS (1)
→[Software]npm/next
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