What is CVE-2025-11880?

CVE-2025-11880 is a medium-severity vulnerability in Sierramike Sm Countdown Widget, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-10-22.

How severe is CVE-2025-11880?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Sierramike Sm Countdown Widget

CVE-2025-11880

The SM CountDown Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's smcountdown shortcode in versions less than, or equal to, 1.2 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (7.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Sierramike Sm Countdown Widget — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2025-11880?: CVE-2025-11880 is a medium-severity vulnerability in Sierramike Sm Countdown Widget, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-10-22.
How severe is CVE-2025-11880?: Medium severity. CVSS v3 base score is 6.4 out of 10.