CVE-2025-64166
Prior to version 16.4.0, a cross-site request forgery (CSRF) vulnerability was identified.
Does this matter?
Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own.
Description
Mercurius is a GraphQL adapter for Fastify. Prior to version 16.4.0, a cross-site request forgery (CSRF) vulnerability was identified. The issue arises from incorrect parsing of the Content-Type header in requests. Specifically, requests with Content-Type values such as application/x-www-form-urlencoded, multipart/form-data, or text/plain could be misinterpreted as application/json. This misinterpretation bypasses the preflight checks performed by the fetch() API, potentially allowing unauthorized actions to be performed on behalf of an authenticated user. This issue has been patched in version 16.4.0.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- EPSS
- 0.16% probability · 5th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-352
- Affected
- mercurius project/mercurius
- Source
- security-advisories@github.com
References
- https://github.com/mercurius-js/mercurius/commit/962d402ec7a92342f4a1b7f5f04af01776838c3cPatch
- https://github.com/mercurius-js/mercurius/pull/1187Issue Tracking, Patch
- https://github.com/mercurius-js/mercurius/security/advisories/GHSA-v66j-6wwf-jc57Exploit, Patch, Vendor Advisory
- https://github.com/mercurius-js/mercurius/security/advisories/GHSA-v66j-6wwf-jc57Exploit, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.