What is CVE-2024-30427?

CVE-2024-30427 is a medium-severity vulnerability in Spiffy Plugins Calendar, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2024-03-29.

How severe is CVE-2024-30427?

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

Is CVE-2024-30427 known to be exploited?

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

XSS in Spiffy Plugins Calendar

CVE-2024-30427

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Spiffy Plugins Spiffy Calendar allows Reflected XSS.This issue affects Spiffy Calendar: from n/a through 4.9.7.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-03-29 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.004 (33.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

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

Frequently asked questions

What is CVE-2024-30427?: CVE-2024-30427 is a medium-severity vulnerability in Spiffy Plugins Calendar, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2024-03-29.
How severe is CVE-2024-30427?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2024-30427 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.