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LMS by LifterLMS <= 3.35.0 — Stored Cross-Site Scripting via Import

CVE-2019-15896Published · Updated

Action summary

Affected: <3.35.0Update to 3.35.0 or newer

All remediation steps
Watch plugin
Severity
Critical9.8
CVSS
9.8
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:H Confidentiality
High
I:H Integrity
High
A:H Availability
High
Weakness
CWE-79 Cross-Site Scripting
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes lifterlms

  1. Affected< 3.35.0
  2. Patched in3.35.0

Update to 3.35.0 or newer.

You are affected if you run < 3.35.0. Version 3.35.0 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 3.35.0, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Jerome Bruandet.

An issue was discovered in the LifterLMS plugin through 3.34.5 for WordPress. The upload_import function in the class.llms.admin.import.php script is prone to an unauthenticated options import vulnerability that could lead to privilege escalation (administrator account creation), website redirection, and stored XSS.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes

All 21
More vulnerabilities in LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes
SeverityVulnerabilityCVEPublished
Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting via Content Question Answer
≤10.3.2Update to 11.0.0
CVE-2026-119098
High7.5Authenticated (Contributor+) Local File Inclusion via 'lifterlms_checkout' Shortcode Attributes
≤10.3.1Update to 10.3.2
CVE-2026-110284
High8.8Authenticated (Custom+) PHP Object Injection via 'custom' Lesson Data
≤10.2.1Update to 10.3.0
CVE-2026-104723
Medium6.4Authenticated (Custom role+) Stored Cross-Site Scripting
≤10.0.9Update to 10.0.10
CVE-2026-14207
Medium4.3Authenticated (Subscriber+) Information Exposure
<10.0.10Update to 10.0.10
CVE-2026-14231

Same weakness (Cross-Site Scripting)

All Cross-Site Scripting
Other Cross-Site Scripting vulnerabilities
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity critical, CVSS 9.8

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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