Data Retrieval Vulnerability in Collabora Online by Collabora
CVE-2026-23623

5.3MEDIUM

Key Information:

Vendor

Collaboraonline

Status
Online
Vendor
CVE Published:
5 February 2026

What is CVE-2026-23623?

Collabora Online, a collaborative online office suite, has a vulnerability that allows a user with view-only rights to download shared files without authorization. This occurs when the user initiates a download process via keyboard shortcuts, circumventing established access restrictions. This flaw can lead to unauthorized data retrieval, posing significant risks to the confidentiality of sensitive information shared within the platform. The issue has been addressed in the latest updates, urging users to upgrade to the patched versions for enhanced security.

Affected Version(s)

online Collabora Online < 25.04.7.5 < Collabora Online 25.04.7.5

online Collabora Online < 24.04.17.3 < Collabora Online 24.04.17.3

online Collabora Online < 23.05.20.1 < Collabora Online 23.05.20.1

References

https://github.com/CollaboraOnline/online/security/adviso...
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CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.