PT-2026-6642 · Collabora+1 · Collabora Online Development Edition+2

Caolanm · Published 2026-02-05 · Updated 2026-02-06 · CVE-2026-23623

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions Collabora Online versions prior to 23.05.20.1 Collabora Online versions prior to 24.04.17.3 Collabora Online versions prior to 25.04.7.5 Collabora Online Development Edition versions prior to 25.04.08.2

Description Collabora Online is a collaborative online office suite based on LibreOffice technology. A user with view-only rights and no download privileges can obtain a local copy of a shared file. Pressing Ctrl+Shift+S initiates the file download process, bypassing access restrictions and leading to unauthorized data retrieval.

Recommendations Update Collabora Online to version 23.05.20.1 or later. Update Collabora Online to version 24.04.17.3 or later. Update Collabora Online to version 25.04.7.5 or later. Update Collabora Online Development Edition to version 25.04.08.2 or later.

Exploit

Fix

Improper Authorization

Weakness Enumeration

CWE-285

Related Identifiers

CVE-2026-23623

GHSA-68V6-R6QQ-MMQ2

Affected Products

Collabora Online

Collabora Online Development Edition

Libreoffice

References · 8

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23623.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-23623 · Security Note
• https://osv.dev/vulnerability/CVE-2026-23623 · Vendor Advisory
• https://github.com/CollaboraOnline/online/security/advisories/GHSA-68v6-r6qq-mmq2 · Note
• https://twitter.com/CVEnew/status/2019558802857566501 · Twitter Post
• https://t.me/CVEtracker/43880 · Telegram Post
• https://t.me/cveNotify/151070 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2019600500891525136 · Twitter Post