CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2023-22477
High (7.5) in mercurius project mercurius. EPSS 1.1% chance of exploitation in the next 30 days. Fixed in mercurius 11.5.0, 8.13.2.
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.
Severity
- EPSS
- 1.1% chance of exploitation in the next 30 days; higher than 65% of CVEs (scores of 2026-10-31)
- CWE
- CWE-248
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mercurius_project:mercurius
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-cm8h-q92v-xcfc | npm | mercurius | >=9.0.0 <11.5.0 | 11.5.0 |
| GHSA-cm8h-q92v-xcfc | npm | mercurius | <8.13.2 | 8.13.2 |