Is CVE-2024-0855 in the CISA KEV catalog?

No. CVE-2024-0855 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-0855?

CVE-2024-0855 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2024-0855?

CVE-2024-0855 has an EPSS score of 0.48% (38th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-0855?

Upgrade spiffy calendar to 4.9.9 or later.

CVE & CISA-KEV Catalog

CVE-2024-0855

MEDIUM

5.3

CVSS v3

NVD

Description

The Spiffy Calendar WordPress plugin before 4.9.9 doesn't check the event_author parameter, and allows any user to alter it when creating an event, leading to deceiving users/admins that a page was created by a Contributor+.

How to fix

Remediation Available

spiffy calendarNVD

Affected:< 4.9.9Fixed in:4.9.9CVE-2024-0855derived 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

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.48%probability of exploitation in 30 days

38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Exploit1

wpscan.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 2025-05-01.