Cleartext Credential Exposure in OptimiDoc Server by OptimiDoc
CVE-2026-15933

6.9MEDIUM

Key Information:

Vendor

Optimidoc

Status
Optimidoc Server
Vendor
CVE Published:
3 September 2026

What is CVE-2026-15933?

The OptimiDoc Server (On-Premise) suffers from a vulnerability that permits the exposure of sensitive third-party authentication credentials. An authenticated administrator can access previously configured service passwords, such as those for SMTP, FTP (used for scan delivery), Active Directory (for user list import), and SharePoint, stored in cleartext. This security oversight allows unauthorized viewing via the web administration panel's page source, significantly risking the integrity and confidentiality of external service access.

Affected Version(s)

OptimiDoc Server 0 < 26.08

References

https://cert.pl/en/posts/2026/09/CVE-2026-15933
third-party-advisory
https://optimidoc.com/category/optimidoc-server/
product

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Paweł Różański (securitum.com)
.