---
id: CVE-2026-15933
title: >-
  OptimiDoc Server (On-Premise) stores credentials for external services in
  cleartext
summary: >-
  OptimiDoc Server (On-Premise) stores credentials for external services in
  cleartext. An authenticated administrator can view previously configured
  service passwords, including SMTP, FTP (for scan delivery), Active Directory
  (for user lis…
severity: none
cwe:
  - CWE-256
published: '2026-09-03'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T14:04:40.750'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15933'
references:
  - url: 'https://cert.pl/en/posts/2026/09/CVE-2026-15933'
    label: cvd@cert.pl
  - url: 'https://optimidoc.com/category/optimidoc-server/'
    label: cvd@cert.pl
tags:
  - nvd
epss: 0.0036
epssPercentile: 0.27051
ingestedAt: '2026-09-08T15:33:26.957Z'
---

## Overview

OptimiDoc Server (On-Premise) stores credentials for external services in cleartext. An authenticated administrator can view previously configured service passwords, including SMTP, FTP (for scan delivery), Active Directory (for user list import), and SharePoint credentials, in cleartext via the web administration panel page source, allowing exposure of sensitive third-party authentication data.


This issue was fixed in version 26.08

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.