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CERT Polska disclosed CVE-2026-15933, a plaintext-password-storage flaw in OptimiDoc Server (On-Premise) releases before version 26.08. An authenticated administrator can view previously configured external-service credentials in cleartext through the web administration panel's page source.
The exposed secrets may include credentials for SMTP, FTP scan delivery, Active Directory user-list imports, and SharePoint. OptimiDoc remediated the issue in version 26.08 following coordinated disclosure with CERT Polska; organizations running earlier releases should upgrade and rotate any credentials configured in the platform.
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CERT Polska published CVE-2026-15933, a CWE-256 plaintext-password-storage vulnerability in OptimiDoc Server (On-Premise). The disclosure noted potential exposure of SMTP, FTP scan-delivery, Active Directory import, and SharePoint credentials; Paweł Różański of securitum.com responsibly reported the issue.
OptimiDoc fixed CVE-2026-15933 in OptimiDoc Server version 26.08 following coordinated disclosure with CERT Polska. The flaw affected versions before 26.08 and allowed authenticated administrators to view configured external-service passwords in web-panel page source.
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