{"cve":"CVE-2021-24562","nvd":{"published":"2021-08-23T12:15:10.197","modified":"2026-06-17T03:40:14.530","status":"Modified","description":"The LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress plugin before 4.21.2 was affected by an IDOR issue, allowing students to see other student answers and grades","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-639"],"references":["https://make.lifterlms.com/2021/05/17/lifterlms-version-4-21-2/","https://wpscan.com/vulnerability/d45bb744-4a0d-4af0-aa16-71f7e3ea6e00","https://make.lifterlms.com/2021/05/17/lifterlms-version-4-21-2/","https://wpscan.com/vulnerability/d45bb744-4a0d-4af0-aa16-71f7e3ea6e00"],"products":["lifterlms:lifterlms"],"source":"nvd","synced_at":"2026-10-19T21:21:57.125947417+00:00"},"epss":{"cve":"CVE-2021-24562","score":0.01625,"percentile":0.76149,"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."]}