CVE-2023-49745: WordPress Spiffy Calendar Plugin <= 4.9.5 is vulnerable to Cross Site Scripting (XSS)

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-12-14 · updated 2026-06-17
Weakness: CWE-79

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Spiffy Plugins Spiffy Calendar allows Stored XSS.This issue affects Spiffy Calendar: from n/a through 4.9.5.

Affected products

Spiffy Plugins Spiffy Calendar: before 4.9.6 — fixed in 4.9.6

How to fix

Upgrade to a fixed version: Spiffy Plugins Spiffy Calendar 4.9.6. Check the vendor advisory for mitigations.

References

https://patchstack.com/database/vulnerability/spiffy-calendar/wordpress-spiffy-calendar-plugin-4-9-5-cross-site-scripting-xss-vulnerability?_s_id=cve
https://patchstack.com/database/vulnerability/spiffy-calendar/wordpress-spiffy-calendar-plugin-4-9-5-cross-site-scripting-xss-vulnerability?_s_id=cve

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