CVE-2021-24308 json
LifterLMS < 4.21.1 - Authenticated Stored XSS in Edit Profile
published 2021-05-24 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11222
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.2%
- EPSS 3.2% chance of exploitation in 30 days, percentile 88%
- public exploits
- 1
- Exploit-DB
Summary
The 'State' field of the Edit profile page of the LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress plugin before 4.21.1 is not properly sanitised when output in the About section of the profile page, leading to a stored Cross-Site Scripting issue. This could allow low privilege users (such as students) to elevate their privilege via an XSS attack when an admin will view their profile.
Patch / fix
Timeline
- Published
- First public exploit (EDB-49912)
Exploit prediction
3.25% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-49912 WordPress Plugin LifterLMS 4.21.0 - Stored Cross-Site Scripting (XSS) webapps, 2021-05-28
- wpscan.com https://wpscan.com/vulnerability/f29f68a5-6575-441d-98c9-867145f2b082 referenced PoC, tagged "exploit" by a source, unverified
- packetstormsecurity.com http://packetstormsecurity.com/files/162856/WordPress-LifterLMS-4.21.0-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Affected products
- LifterLMS LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/f29f68a5-6575-441d-98c9-867145f2b082
exploit, third-party-advisory
-
packetstormsecurity.com
/files/162856/WordPress-LifterLMS-4.21.0-Cross-Site-Scripting.html
exploit, third-party-advisory, vdb-entry
-
github.com
/gocodebox/lifterlms/releases/tag/4.21.1
release-notes, third-party-advisory
Sources
- CVE List CVE-2021-24308
- NVD CVE-2021-24308
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