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CVE-2026-63146 – Unauthenticated RCE via PHP Code Injection – Omnispace Agora Project before 26.10.0

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Summary

CVE-2026-63146 is a critical code injection vulnerability (CWE-94) in Omnispace Agora Project that can lead to unauthenticated remote code execution. All versions before 26.10.0 are affected. The CVSS v4.0 base score is 9.3 (Critical).

Technical details

  • Root cause: Unescaped, attacker-controlled values are written into the config.inc.php configuration file during installation, through File::updateConfigFile() and DbInstall::dbControl().
  • Contributing flaw: An SQL injection issue is enabled by PDO::ATTR_EMULATE_PREPARES, which supports stacked queries.
  • Attack vector: Network, with no authentication or user interaction. An attacker uses the SQL injection to re-trigger the installer, then injects PHP code into the configuration file.
  • Impact: Arbitrary PHP code execution on the underlying server, which compromises confidentiality, integrity and availability.

Affected software

  • Omnispace Agora Project: all versions before 26.10.0

Severity

  • CVSS v4.0: 9.3 (Critical), CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • CVSS v3.1: 9.8 (Critical), CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: upgrade Agora Project to version 26.10.0 or later.
  • Review config.inc.php for unexpected or injected PHP code, and investigate any instance that was exposed to the internet while running an affected version.
  • If you cannot patch right away, restrict network access to the affected instance.

References

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