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CVE-2026-15933— Cleartext Storage of Sensitive Credentials in OptimiDoc Server (On-Premise)

Quick assessment

Affected
OptimiDoc OptimiDoc Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OptimiDoc Server是OptimiDoc公司的一款文档管理服务器软件。 OptimiDoc Server 26.08之前版本存在信任管理问题漏洞，该漏洞源于以明文形式存储外部服务凭据，可能导致经过身份验证的管理员通过Web管理面板页面源代码查看已配置的服务密码（包括SMTP、FTP、Active Directory和SharePoint凭据），从而泄露敏感的第三方认证数据。

CVSS 6.9 · Medium EPSS 0.36% · P29

Affected Version Matrix 1

VendorProduct Version RangeStatus
OptimiDoc OptimiDoc Server < 26.08 affected
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I. Basic Information for CVE-2026-15933

Vulnerability Information
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Vulnerability Title
Cleartext Storage of Sensitive Credentials in OptimiDoc Server (On-Premise)
Source: CVE Program / CVE List V5
Vulnerability Description
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
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
明文存储口令
Source: CVE Program / CVE List V5
Vulnerability Title
OptimiDoc Server 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OptimiDoc Server是OptimiDoc公司的一款文档管理服务器软件。 OptimiDoc Server 26.08之前版本存在信任管理问题漏洞，该漏洞源于以明文形式存储外部服务凭据，可能导致经过身份验证的管理员通过Web管理面板页面源代码查看已配置的服务密码（包括SMTP、FTP、Active Directory和SharePoint凭据），从而泄露敏感的第三方认证数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OptimiDoc OptimiDoc Server 0 ~ 26.08 -

II. Public POCs for CVE-2026-15933

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III. Intelligence Information for CVE-2026-15933

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Security Blog Posts for CVE-2026-15933 (1)

Vendor Pages for CVE-2026-15933 (1)

IV. Related Vulnerabilities

Same weakness: CWE-256

V. Comments for CVE-2026-15933

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