What’s Vulnerable › Vulnerabilities
CVE-2021-39348: LearnPress – WordPress LMS Plugin <= 4.1.3.1 Authenticated Stored Cross-Site Scripting
- Severity: medium (CVSS 4.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 5.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2021-10-21 · updated 2026-06-17
- Weakness: CWE-80
Description
The LearnPress WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient escaping on the $custom_profile parameter found in the ~/inc/admin/views/backend-user-profile.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 4.1.3.1. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled. Please note that this is seperate from CVE-2021-24702.
Affected products
References
- https://github.com/BigTiger2020/word-press/blob/main/LearnPress.md
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2614592%40learnpress&new=2614592%40learnpress&sfp_email=&sfph_mail=
- https://wordfence.com/vulnerability-advisories/#CVE-2021-39348
- https://github.com/BigTiger2020/word-press/blob/main/LearnPress.md
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2614592%40learnpress&new=2614592%40learnpress&sfp_email=&sfph_mail=
- https://wordfence.com/vulnerability-advisories/#CVE-2021-39348
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