XSS in Wpsymposiumpro Wp Symposium Pro
CVE-2021-47927
WordPress Plugin WP Symposium Pro 2021.10 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by exploiting insufficient sanitization of the forum name parameter. Attackers can submit POST requests to the admin setup page with JavaScript payloads in the wps_admin_forum_add_name parameter, which are stored and executed when the forum is accessed.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (8.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Wpsymposiumpro Wp Symposium Pro — versions 2021.10
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/50514 (exploit)
- www.wpsymposiumpro.com/ (product)
- wordpress.org/plugins/wp-symposium-pro/ (product)
- www.vulncheck.com/advisories/wordpress-plugin-wp-symposium-pro-stored-xss-via-w… (third-party-advisory)
Frequently asked questions
- What is CVE-2021-47927?
- CVE-2021-47927 is a medium-severity vulnerability in Wpsymposiumpro Wp Symposium Pro, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-05-10.
- How severe is CVE-2021-47927?
- Medium severity. CVSS v3 base score is 6.4 out of 10.