CVE-2025-13673
Published: 28 February 2026
Summary
CVE-2025-13673 is a high-severity SQL Injection (CWE-89) vulnerability in Wordpress (inferred from references). Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 32.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2025-13673 is a SQL injection vulnerability in the Tutor LMS – eLearning and online course solution plugin for WordPress, affecting all versions up to and including 3.9.6. The flaw arises from insufficient escaping of the user-supplied 'coupon_code' parameter combined with inadequate preparation of the existing SQL query, allowing attackers to append malicious SQL payloads.
Unauthenticated attackers can exploit this vulnerability over the network with low attack complexity and no user interaction required. Successful exploitation enables the extraction of sensitive information from the database by injecting additional SQL queries into existing ones. The issue carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N), reflecting high confidentiality impact with no effects on integrity or availability.
This vulnerability received partial mitigation in versions 3.9.4 and 3.9.6. Additional details on patches and advisories are available in the WordPress plugin trac changeset at https://plugins.trac.wordpress.org/changeset/3469242/tutor and Wordfence threat intelligence at https://www.wordfence.com/threat-intel/vulnerabilities/id/007df869-dacb-4b0a-9c98-50586934cdab?source=cve.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-208143
Vulnerability details
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…
more
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.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
SQL injection in public-facing WordPress plugin directly enables T1190 exploitation for unauthenticated DB access; facilitates T1213.006 for sensitive data extraction via malicious queries.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly addresses SQL injection by requiring validation and sanitization of user-supplied parameters like 'coupon_code' before incorporation into SQL queries.
Ensures timely remediation of known flaws such as the insufficient escaping in Tutor LMS versions up to 3.9.6 through identification, reporting, and patching.
Boundary protection with web application firewalls can inspect and block malicious SQL payloads targeting the vulnerable 'coupon_code' parameter.