CVE-2025-66918
Published: 11 December 2025
Summary
CVE-2025-66918 is a high-severity Improper Input Validation (CWE-20) vulnerability in Hashenudara Edoc-Doctor-Appointment-System. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 31.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-15 (Information Output Filtering).
Deeper analysis
CVE-2025-66918 is a Cross-Site Scripting (XSS) vulnerability in edoc-doctor-appointment-system version 1.0.1, specifically affecting the admin/add-session.php component through the "title" parameter. This issue stems from CWE-20 (Improper Input Validation) and CWE-79 (Cross-site Scripting), earning a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Published on 2025-12-11, it allows remote exploitation over the network with low complexity.
An authenticated attacker with low privileges (PR:L), such as an admin user, can exploit the vulnerability by injecting a malicious script into the "title" parameter during session addition. Upon execution in a victim's browser viewing the affected page, this enables high-impact outcomes, including compromise of confidentiality through data theft (e.g., session tokens), integrity violations via unauthorized actions, and availability disruptions, all without requiring user interaction.
Mitigation guidance and further details are available in the referenced GitHub repositories: the project source at https://github.com/HashenUdara/edoc-doctor-appointment-system and vulnerability research at https://github.com/omkaryepre/vulnerability-research/blob/main/CVE-2025-66918/readme.md. Security practitioners should review these for patches, input validation fixes, or workarounds specific to the application.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-202753
Vulnerability details
edoc-doctor-appointment-system v1.0.1 is vulnerable to Cross Site Scripting (XSS) in admin/add-session.php via the "title" parameter.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
XSS vulnerability in web application enables exploitation of public-facing application (T1190) and browser session hijacking via injected scripts to steal session cookies (T1185).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly enforces proper validation of the 'title' parameter in admin/add-session.php to block malicious script injection from improper input validation.
Mandates filtering and encoding of user-supplied 'title' data on output to prevent XSS script execution in victims' browsers.
Establishes a risk-based process to identify, prioritize, test, and remediate the specific XSS flaw in the vulnerable application component.