What is CVE-2024-30528?

CVE-2024-30528 is a medium-severity vulnerability in Spiffy Plugins Calendar, classified under Missing Authorization. CVSS score: 5.4/10. Published 2024-06-04.

How severe is CVE-2024-30528?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2024-30528 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Spiffy Plugins Calendar

CVE-2024-30528

Missing Authorization vulnerability in Spiffy Plugins Spiffy Calendar.This issue affects Spiffy Calendar: from n/a through 4.9.10.

Vulnerability class: Broken Access Control

Published 2024-06-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.003 (18.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-862 — Missing Authorization

Public proof-of-concept exploits

20142995/nuclei-templates

References

patchstack.com/database/vulnerability/spiffy-calendar/wordpress-spiffy-calendar… (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2024-30528?: CVE-2024-30528 is a medium-severity vulnerability in Spiffy Plugins Calendar, classified under Missing Authorization. CVSS score: 5.4/10. Published 2024-06-04.
How severe is CVE-2024-30528?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2024-30528 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.