{"cve":"CVE-2021-36851","nvd":{"published":"2022-04-04T20:15:09.487","modified":"2026-06-17T03:59:31.277","status":"Modified","description":"Authenticated (editor or higher user role) Cross-Site Scripting (XSS) vulnerability in Web-Settler Testimonial Slider – Free Testimonials Slider Plugin (WordPress plugin) via parameters mpsp_posts_bg_color, mpsp_posts_description_color, mpsp_slide_nav_button_color.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79"],"references":["https://patchstack.com/database/vulnerability/testimonial-add/wordpress-testimonial-slider-plugin-3-5-8-3-cross-site-scripting-xss-vulnerability","https://wordpress.org/plugins/testimonial-add/#developers","https://patchstack.com/database/vulnerability/testimonial-add/wordpress-testimonial-slider-plugin-3-5-8-3-cross-site-scripting-xss-vulnerability","https://wordpress.org/plugins/testimonial-add/#developers"],"products":["web-settler:testimonial_slider"],"source":"nvd","synced_at":"2026-10-19T21:29:06.454770966+00:00"},"epss":{"cve":"CVE-2021-36851","score":0.00566,"percentile":0.46998,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}