CVE-2023-22477
mercurius has Uncaught Exception when using subscriptions
5.3
MEDIUM
CVSS 3.1
EPSS 0.25%
Description
### Impact Any users of Mercurius until version v11.5.0 are subjected to a denial of service attack by sending a malformed packet over WebSocket to `/graphql`. ### Patches This was patched in https://github.com/mercurius-js/mercurius/pull/940. The patch was released as v11.5.0 and v8.13.2. ### Workarounds Disable subscriptions. ### References Reported publicly as https://github.com/mercurius-js/mercurius/issues/939. The same problem was solved in https://github.com/fastify/fastify-websocket/pull/228
How to fix CVE-2023-22477
To remediate CVE-2023-22477, upgrade the affected package to a fixed version below.
- —upgrade to 11.5.0 or later
Is CVE-2023-22477 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 9.0.0, < 11.5.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |