Omnispace Agora Project through 26.10.0 contains a broken access control vulnerability in which the isAutor() function in MdlObject.php grants accessRight=3 based solely on object authorship without verifying the user still belongs to the object's space. Attackers who were previously members and authored objects can retain unauthorized read access to space objects even after being removed from the space, leading to persistent information disclosure.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Omnispace Agora Project unaffected
Version Status Constraints
0 affected ≤ 26.10.0

No data.

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Project Subscriptions

Vendors Products
Agora-project Subscribe
Agora-project Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.agora-project.net/ cve-icon cve-icon
https://www.akailabs.fr/blog/multiple-vulnerabilities-in-agora-project-26-5-2#cve-2026-63173-stale-author-access-after-space-revocation-via-isautor cve-icon cve-icon
https://www.vulncheck.com/advisories/omnispace-agora-project-broken-access-control-via-isautor cve-icon cve-icon
History

Fri, 13 Nov 2026 17:30:00 +0000

Type Values Removed Values Added
Description Omnispace Agora Project through 26.10.0 contains a broken access control vulnerability in which the isAutor() function in MdlObject.php grants accessRight=3 based solely on object authorship without verifying the user still belongs to the object's space. Attackers who were previously members and authored objects can retain unauthorized read access to space objects even after being removed from the space, leading to persistent information disclosure.
Title Omnispace Agora Project 26.10.0 Broken Access Control via isAutor()
First Time appeared Agora-project
Agora-project agora-project
Weaknesses CWE-862
CPEs cpe:2.3:a:agora-project:agora-project:*:*:*:*:*:*:*:*
Vendors & Products Agora-project
Agora-project agora-project
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-13T17:24:57.138Z

Reserved: 2026-07-15T21:18:20.187Z

Link: CVE-2026-63173

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-13T18:17:48.463

Modified: 2026-11-13T18:17:48.463

Link: CVE-2026-63173

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses