High severity · published Feb 28, 2026
CVE-2025-13673
Tutor LMS <= 3.9.6 - Unauthenticated SQL Injection via coupon_code
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to SQL Injection via the 'coupon_code' parameter in all versions up to, and including, 3.9.6 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. NOTE: This vulnerability was partially mitigated in versions 3.9.4 and 3.9.6.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TL
Tutor LMS – eLearning and online course solution · themeum
through 3.9.6 · source: vendor
Affected product
TL
Tutor LMS – eLearning and online course solution
themeum
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-13673
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-13673
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3469242/tutor
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/007df869-dacb-4b0a-9c98-50586934cdab?source=cve
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