CVE-2026-65578 in Agora Plugin
Summary
by MITRE • 08/06/2026
Unauthenticated PHP Object Injection in Agora <= 1.9 versions.
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Analysis
by VulDB Data Team • 08/06/2026
This vulnerability involves an unauthenticated php object injection flaw in agora versions 1.9 and earlier, representing a critical security weakness that allows remote attackers to execute arbitrary code on affected systems. The vulnerability stems from insufficient input validation and sanitization within the application's handling of serialized php objects, creating an opportunity for malicious actors to inject crafted object data that gets deserialized without proper authentication checks. This type of vulnerability falls under the category of CWE-502 which specifically addresses deserialization of untrusted data, making it particularly dangerous as it can lead to complete system compromise when exploited by unauthorized users.
The technical implementation of this flaw occurs when the application accepts serialized php objects through user-controllable input parameters that are then processed without adequate security measures. Attackers can construct malicious serialized object payloads that, when deserialized by the vulnerable application, trigger unintended code execution. This typically happens in scenarios where the application uses functions like unserialize() or similar deserialization mechanisms without proper authentication requirements or input validation. The vulnerability is especially concerning because it operates without requiring any prior authentication, making it accessible to anyone who can interact with the affected application's endpoints.
The operational impact of this vulnerability extends beyond simple code execution, potentially allowing attackers to gain full control over affected systems and access sensitive data. Successful exploitation could enable attackers to perform privilege escalation, establish persistent backdoors, exfiltrate confidential information, or use the compromised system as a staging point for further attacks within the network infrastructure. The vulnerability affects all versions up to 1.9, meaning organizations running these older releases face immediate risk without proper mitigation measures in place.
Security mitigations for this vulnerability should focus on implementing proper input validation and authentication checks before any deserialization occurs. Organizations must ensure that all user-controllable inputs are properly sanitized and validated before being processed by php's deserialization functions. The recommended approach includes implementing authentication requirements for any endpoints that handle serialized data, using alternative serialization formats that don't support object injection, or employing secure deserialization libraries that provide additional protections against malicious payloads. Additionally, applying the latest security patches from agora vendors and conducting regular security assessments to identify similar vulnerabilities in other components of the system would significantly reduce exposure to such attacks. The ATT&CK framework categorizes this type of vulnerability under technique T1595 which deals with network boundary bridging, while CWE-502 directly addresses the core issue of unsafe deserialization practices that make such attacks possible.