CVE-2026-77092 in Content Extractor
Summary
by MITRE • 09/08/2026
Content Extractor contained a deserialization of untrusted data issue affecting privilege management. Software customers upgrade to resolved maintenance release. Update Content Extractor.
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Analysis
by VulDB Data Team • 09/08/2026
The vulnerability identified in the Content Extractor software represents a critical security flaw rooted in the improper handling of serialized objects, specifically categorized under CWE-502 as Deserialization of Untrusted Data. This type of vulnerability arises when an application accepts data from an untrusted source and deserializes it without sufficient validation or integrity checks. In this specific instance, the flaw is directly tied to privilege management mechanisms within the software architecture. When maliciously crafted serialized payloads are processed by the Content Extractor, they can exploit weaknesses in how object states are reconstructed, potentially allowing attackers to manipulate internal application logic that governs user permissions and access rights.
The operational impact of this vulnerability is severe due to its direct association with privilege escalation. By exploiting the deserialization flaw, an attacker may be able to bypass authentication controls or elevate their privileges within the system beyond what was originally intended by the administrator. This could lead to unauthorized access to sensitive documents, modification of configuration settings that control security policies, or complete compromise of the underlying server infrastructure hosting the Content Extractor service. The ability to manipulate privilege management through deserialization attacks underscores the importance of secure coding practices regarding object instantiation and state restoration from external inputs.
Industry standards such as OWASP Top 10 highlight this class of vulnerabilities as a significant risk vector for modern web applications and enterprise software, particularly those that rely heavily on serialization frameworks like Java Serialization or Python pickle. The ATT&CK framework maps this behavior to techniques involving command injection or privilege escalation via system-level exploits, emphasizing the need for strict input validation and output encoding strategies. Mitigation requires not only updating the software but also implementing defense-in-depth measures such as allowinglist-based deserialization filters, ensuring that only known safe classes are permitted during object reconstruction processes.
To address this issue effectively, customers must upgrade to the resolved maintenance release provided by the vendor. This update contains patches designed to validate input data more rigorously before it is passed through the serialization layer, thereby neutralizing the attack vector associated with untrusted deserialization. Additionally, organizations should review their deployment configurations to ensure that least privilege principles are enforced at both the application and operating system levels. Regular security audits and penetration testing focused on input validation can further reduce the risk of similar vulnerabilities being exploited in the future, ensuring robust protection against advanced persistent threats targeting enterprise content management systems.