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TI-2021-12412 Aliases CVE-2021-32744

Unauthenticated attacker could gain access to currently open files

Priority MEDIUM 44CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

Collabora Online is a collaborative online office suite. In versions prior to 4.2.17-1 and version 6.4.9-5, unauthenticated attackers are able to gain access to files which are currently opened by other users in the Collabora Online editor. For successful exploitation the attacker is required to guess the file identifier - the predictability of this file identifier is dependent on external file-storage implementations (this is a potential "IDOR" - Insecure Direct Object Reference - vulnerability). Versions 4.2.17-1 and 6.4.9-5 contain patches for this issue. There is no known workaround except updating the Collabora Online application to one of the patched releases.

Why it matters now

EPSS 0.01053 64th percentileScored 2026-11-07
Fix Fixed online (CollaboraOnline): 4.2.17-1, 6.4.9-5

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Collaboraonlinebefore 4.2.17-1; 6.4.0 to before 6.4.9-54.2.17-1, 6.4.9-5Patch availableCNA
  • online VendorCollabora Affected before 4.2.17-1; 6.4.0 to before 6.4.9-5 Fixed in 4.2.17-1, 6.4.9-5 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:collabora:online:*:*:*:*:*:*:*:*before 4.2.17-1; 6.4.0 to before 6.4.9-5VulnerableCollabora
  • cpe:2.3:a:collabora:online:*:*:*:*:*:*:*:* Versions before 4.2.17-1; 6.4.0 to before 6.4.9-5 Vulnerable ·Collabora

Remediation

  • Fix · CNA online (CollaboraOnline) Fixed in 4.2.17-1, 6.4.9-5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-32744

References

Advisory 1

  • TI-2021-19623 Reflected Cross-Site-Scripting vulnerability in Collabora Online CVSS 3.1HIGH 8.2
  • TI-2021-12413 Reflected cross-site-scripting in Collabora online CVSS 3.1HIGH 7.3
  • TI-2024-30157 JavaScript Injection via url encoded values in links in Collabora Office Android CVSS 3.1MEDIUM 6.3
  • TI-2023-14855 Reflected XSS vulnerability in CollaboraOnline CVSS 3.1MEDIUM 6.1
  • TI-2024-16568 Sensitive Information Disclosure (JailID) to users in Collabora Online CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences