CVE-2023-22477

Public Exploit
Mercurius is vulnerable to denial of service (DoS) when using subscriptions

Description

Mercurius is a GraphQL adapter for Fastify. Any users of Mercurius until version 10.5.0 are subjected to a denial of service attack by sending a malformed packet over WebSocket to `/graphql`. This issue was patched in #940. As a workaround, users can disable subscriptions.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.15%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: mercurius-js mercurius
Published at:
Updated at:

References

Link Tags
https://github.com/mercurius-js/mercurius/security/advisories/GHSA-cm8h-q92v-xcfc third party advisory patch
https://github.com/mercurius-js/mercurius/issues/939 issue tracking exploit third party advisory
https://github.com/mercurius-js/mercurius/pull/940 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2023-22477?
CVE-2023-22477 has been scored as a medium severity vulnerability.
How to fix CVE-2023-22477?
To fix CVE-2023-22477, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-22477 being actively exploited in the wild?
It is possible that CVE-2023-22477 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-22477?
CVE-2023-22477 affects mercurius-js mercurius.
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