CVE-2021-43801
Any users from Mercurius@8.10.0 to 8.11.1 are subjected to a denial of service attack by sending a malformed JSON to `/graphql` unless they are using a custom error handler.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Mercurius is a GraphQL adapter for Fastify. Any users from Mercurius@8.10.0 to 8.11.1 are subjected to a denial of service attack by sending a malformed JSON to `/graphql` unless they are using a custom error handler. The vulnerability has been fixed in https://github.com/mercurius-js/mercurius/pull/678 and shipped as v8.11.2. As a workaround users may use a custom error handler.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.52% probability · 73th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-754
- Affected
- mercurius project/mercurius
- Source
- security-advisories@github.com
References
- https://github.com/mercurius-js/mercurius/issues/677Issue Tracking, Patch, Third Party Advisory
- https://github.com/mercurius-js/mercurius/pull/678/commits/732b2f895312da8deadd7b173dcd2d141d54b223Patch, Third Party Advisory
- https://github.com/mercurius-js/mercurius/security/advisories/GHSA-273r-rm8g-7f3xPatch, Third Party Advisory
- https://github.com/mercurius-js/mercurius/issues/677Issue Tracking, Patch, Third Party Advisory
- https://github.com/mercurius-js/mercurius/pull/678/commits/732b2f895312da8deadd7b173dcd2d141d54b223Patch, Third Party Advisory
- https://github.com/mercurius-js/mercurius/security/advisories/GHSA-273r-rm8g-7f3xPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.