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TI-2026-73480 Aliases CVE-2026-63156GHSA-mwm7-gw2j-5q99

Reflected XSS in Omnispace Agora Project via visioUrl parameter

Priority LOW 29CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Omnispace Agora Project before 26.10.0 contains a reflected cross-site scripting flaw (CWE-79) in the visioUrl parameter. The parameter bypasses the URL-sanitizing branch of the parameter filter and is urldecoded after filtering, so injected HTML attributes reach the page. An unauthenticated attacker can send a victim a crafted URL that runs arbitrary JavaScript in the victim's browser before login.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Omnispace Agora Project before 26.10.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious HTML attributes by manipulating the visioUrl parameter, which was not routed through the URL-sanitizing branch of the parameter filter and was urldecoded after filtering. Attackers can craft a malicious URL containing the visioUrl parameter with an attribute breakout payload to execute arbitrary JavaScript in the victim's browser pre-authentication, with the issue fixed in version 26.10.0 via changes to app/Common/Req.php.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00303 23rd percentileScored 2026-11-07
Fix Fixed Agora Project (Omnispace): 26.10.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OmnispaceAgora Projectbefore 26.10.026.10.0Patch availableCNA
  • Agora Project VendorOmnispace Affected before 26.10.0 Fixed in 26.10.0 Patch available CNA

Remediation

Update Omnispace Agora Project to version 26.10.0, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Agora Project (Omnispace) Fixed in 26.10.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Omnispace Agora Project 26.10.0

    21 records Highest priority Priority MEDIUM 7 MEDIUM, 14 LOW

    Other records, highest priority first

    • TI-2026-73473 PHP code injection in Omnispace Agora Project configuration filePriority MEDIUM 49
    • TI-2026-73487 Broken access control in Omnispace Agora Project lets attackers download filesPriority MEDIUM 44
    • TI-2026-73486 Path traversal in Omnispace Agora Project lets attackers write filesPriority MEDIUM 41
    Show all 21 records →

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-63156
  2. 2026-10-13 Alias added: GHSA-mwm7-gw2j-5q99
  3. 2026-10-14 CISA SSVC decision points changed

References

Patch 1

Other 1

  • TI-2026-73473 PHP code injection in Omnispace Agora Project configuration file CVSS 4.0CRITICAL 9.3
  • TI-2026-73487 Broken access control in Omnispace Agora Project lets attackers download files CVSS 4.0HIGH 8.7
  • TI-2026-73486 Path traversal in Omnispace Agora Project lets attackers write files CVSS 4.0HIGH 8.7
  • TI-2026-73484 Omnispace Agora Project stores remember-me tokens in plaintext CVSS 4.0CRITICAL 9.1
  • TI-2026-73483 Predictable password-reset token in Omnispace Agora enables takeover CVSS 4.0CRITICAL 9.1
  • TI-2026-73476 Predictable default passwords in Omnispace Agora Project allow account takeover CVSS 4.0CRITICAL 9.1
See all 20 →

Sources

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