CVE-2026-15933

6.9 mediumEPSS 0.5%

Medium (6.9). EPSS 0.5% chance of exploitation in the next 30 days.

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

Severity

CVSS 4.0

6.9 medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-31)
CWE: CWE-256
Published: 2026-09-03
Modified: 2026-09-08
Record from: the NVD, synced 2026-10-19

References

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

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