What is CVE-2025-5528?

CVE-2025-5528 is a medium-severity vulnerability in Heateor Sassy Social Share, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-06-07.

How severe is CVE-2025-5528?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Heateor Sassy Social Share

CVE-2025-5528

The Social Sharing Plugin – Sassy Social Share plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the heateor_mastodon_share parameter in all versions up to, and including, 3.3.75 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action, such as clicking on a link.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (11.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Heateor Sassy_social_share
Heateor Social Sharing Plugin – Sassy Share — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security@wordfence.com (Third Party Advisory)
security@wordfence.com (Product)

Frequently asked questions

What is CVE-2025-5528?: CVE-2025-5528 is a medium-severity vulnerability in Heateor Sassy Social Share, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-06-07.
How severe is CVE-2025-5528?: Medium severity. CVSS v3 base score is 6.1 out of 10.