CVE-2026-1815 describes an insufficient session expiration vulnerability (CWE-613) in the TEİAŞ Mobile Application versions from 1.6.2 before 1.13. This weakness allows sessions to remain valid longer than intended, potentially enabling an attacker with limited privileges and user interaction to hijack a session. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requiring privileges and user interaction, with high confidentiality impact but no integrity or availability impact.

Successful exploitation could lead to session hijacking, allowing an attacker to gain unauthorized access to user sessions and potentially sensitive information. The confidentiality impact is high, but integrity and availability are not affected. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users and administrators should be cautious when using affected versions and consider limiting session exposure. Monitor for vendor updates regarding patches or official mitigations.