CVE-2026-15276 in Symphonia
Summary
by MITRE • 07/10/2026
A flaw has been found in pdeljanov Symphonia up to 0.6.0. This vulnerability affects unknown code of the component Metadata Handler. This manipulation causes denial of service. The attack needs to be launched locally. The exploit has been published and may be used. The pull request to fix this issue awaits acceptance.
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Analysis
by VulDB Data Team • 07/10/2026
The vulnerability in pdeljanov Symphonia version 0.6.0 represents a critical denial of service flaw within the Metadata Handler component that poses significant operational risks to affected systems. This security weakness resides in code that processes metadata information, making it particularly dangerous as metadata handling is fundamental to the application's core functionality. The vulnerability's local attack requirement means that exploitation necessitates physical or administrative access to the target system, but this limitation does not diminish its potential impact given that local privileges are often readily available in many operational environments.
The technical nature of this flaw manifests through manipulation of the Metadata Handler component which likely processes file metadata, configuration data, or other structured information. When improperly handled, such manipulation can cause the application to crash or become unresponsive, effectively rendering the service unavailable to legitimate users. The fact that a working exploit has been published indicates that attackers have already developed methods to trigger this vulnerability, making it an immediate concern for organizations running affected versions of Symphonia. This publication status transforms what might have been a theoretical risk into an active threat that requires urgent attention.
The operational impact of this denial of service vulnerability extends beyond simple service interruption as it can affect the entire workflow of applications relying on Symphonia's metadata handling capabilities. Organizations using this software for media processing, content management, or other metadata-intensive operations may experience significant disruptions to their business processes. The vulnerability's presence in a widely used component like Metadata Handler means that even minor exploitation attempts could cause cascading failures throughout dependent systems, particularly in environments where Symphonia serves as a critical backend service.
Security practitioners should prioritize immediate mitigation efforts by implementing the pending pull request fix once it becomes available and accessible to the community. Until then, organizations should consider restricting local access to affected systems, implementing monitoring for suspicious activity patterns related to metadata processing, and potentially isolating systems running vulnerable versions into restricted network segments. The vulnerability aligns with CWE-400 which addresses "Uncontrolled Resource Consumption" and may also relate to ATT&CK technique T1499.004 for "Endpoint Denial of Service" as it specifically targets local system resources through metadata manipulation. Organizations should also consider implementing application whitelisting policies to prevent execution of unauthorized code that might exploit this vulnerability, particularly in environments where the application operates with elevated privileges.