Omnispace Agora Project: Broken access control in space assignment
Summary
Agora Project (Omnispace) before 26.10.0 contains a broken access control flaw in the spaceAffectList function. A space administrator can assign users to spaces outside their own authority because the rights check on the target space is missing during the import flow. This breaks tenant isolation between spaces and allows manipulation of user-space memberships.
Affected
- Omnispace Agora Project versions before 26.10.0
Fixed in
- Version 26.10.0 or later (the vendor's GitHub release is tagged 26.10; later 26.10.x builds are available)
Workaround
- Unknown. No vendor-documented workaround.
- Restrict the space administrator role to trusted staff until the update is installed.
Exploitation
- No evidence of exploitation in the wild found. No CISA KEV entry.
- CISA SSVC: exploitation none, automatable no, technical impact total.
- Public proof of concept: unknown.
Our recommendation
- Update Agora Project to the latest 26.10.x release.
- Limit the space administrator role to trusted staff.
- Review recent user-to-space assignments and imports for unexpected memberships.
- Check audit or database logs for these changes.
- Prioritise the update, as other Agora CVEs fixed in 26.10.0 are more severe and some are unauthenticated.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- GitHub release Agora Project 26.10 github.com
- VulnCheck advisory www.vulncheck.com
- Agora Project home page www.agora-project.net
- OSV record CVE-2026-63174 osv.dev
- CVE record aggregator (threatint) cve.threatint.com
- Softaculous update to 26.10.2 www.softaculous.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 08:21.
Original description (NVD)
Omnispace Agora Project before 26.10.0 contains a broken access control vulnerability that allows a space administrator to assign users into spaces outside their authority because the spaceAffectList affectation was performed without verifying the caller's rights to the target space. Attackers can exploit the missing readRight() check in the import flow's join INSERT to break tenant isolation and manipulate user-space assignments across unauthorized spaces.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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