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I. Basic Information for CVE-2026-23623
Vulnerability Information

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Vulnerability Title
Collabora Online vulnerable to Authorization Bypass
Source: NVD (National Vulnerability Database)
Vulnerability Description
Collabora Online is a collaborative online office suite based on LibreOffice technology. Prior to Collabora Online Development Edition version 25.04.08.2 and prior to Collabora Online versions 23.05.20.1, 24.04.17.3, and 25.04.7.5, a user with view-only rights and no download privileges can obtain a local copy of a shared file. Although there are no corresponding buttons in the interface, pressing Ctrl+Shift+S initiates the file download process. This allows the user to bypass the access restrictions and leads to unauthorized data retrieval. This issue has been patched in Collabora Online Development Edition version 25.04.08.2 and Collabora Online versions 23.05.20.1, 24.04.17.3, and 25.04.7.5.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Collabora Online 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Collabora Online是英国Collabora公司的一个应用软件。一个强大的基于 LibreOffice 的在线办公室,支持所有主要的文档、电子表格和演示文件格式。 Collabora Online 25.04.08.2之前版本、23.05.20.1之前版本、24.04.17.3之前版本和25.04.7.5之前版本存在授权问题漏洞,该漏洞源于用户可通过快捷键绕过访问限制,可能导致未经授权的数据检索。
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
VendorProductAffected VersionsCPESubscribe
CollaboraOnlineonline Collabora Online < 25.04.7.5 -
II. Public POCs for CVE-2026-23623
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III. Intelligence Information for CVE-2026-23623
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IV. Related Vulnerabilities
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