Is CVE-2023-22477 in the CISA KEV catalog?

No. CVE-2023-22477 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-22477?

CVE-2023-22477 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2023-22477?

CVE-2023-22477 has an EPSS score of 1.06% (60th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-22477?

Upgrade mercurius to 11.5.0 or later.

CVE & CISA-KEV Catalog

CVE-2023-22477

MEDIUM

5.3

CVSS v3

NVD

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.

CWE-248

How to fix

Remediation Available

mercuriusNVD

Affected:>= 9.0.0, < 11.5.0Fixed in:11.5.0CVE-2023-22477derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

1.06%probability of exploitation in 30 days

60thpercentile

Moderate risk: more likely to be exploited than 60% of all known CVEs.

References

Patch2

Exploit1

github.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.