CVE-2023-0363: Scheduled Announcements Widget < 1.0 - Contributor+ Stored 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: yes
Published: 2023-04-10 · updated 2026-06-17
Weakness: CWE-79

Description

The Scheduled Announcements Widget WordPress plugin before 1.0 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.

Affected products

Scheduled Announcements Widget: before 1.0 — fixed in 1.0

How to fix

Upgrade to a fixed version: Scheduled Announcements Widget 1.0. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/6d332a47-e96c-455b-9e8f-db6dbb59b518
https://wpscan.com/vulnerability/6d332a47-e96c-455b-9e8f-db6dbb59b518

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