CVE-2026-15495 Overview
CVE-2026-15495 is an OS command injection vulnerability in SonicCloudOrg sonic-agent versions up to 2.7.2. The flaw resides in an unknown function within the AndroidWSServer.java file, part of the Android WebSocket Server component. Attackers manipulate the path argument to inject operating system commands. The vulnerability is remotely exploitable and has been publicly disclosed with proof-of-concept code available. The vendor was contacted but did not respond, and the affected product line is no longer supported by the maintainer. The weakness is classified under CWE-77: Improper Neutralization of Special Elements used in a Command.
Critical Impact
Remote attackers with low-privilege access can inject arbitrary operating system commands through the WebSocket path parameter, potentially executing code within the sonic-agent process context.
Affected Products
- SonicCloudOrg sonic-agent versions up to and including 2.7.2
- Android WebSocket Server component (AndroidWSServer.java)
- Product line is end-of-life and unsupported by the maintainer
Discovery Timeline
- 2026-07-12 - CVE-2026-15495 published to NVD
- 2026-07-15 - Last updated in NVD database
Technical Details for CVE-2026-15495
Vulnerability Analysis
The vulnerability exists in the Android WebSocket Server implementation of sonic-agent, specifically in AndroidWSServer.java. The server accepts WebSocket connections and processes a path argument that is passed to an operating system command execution routine without adequate sanitization. Because user-controlled input flows directly into a command interpreter, an attacker can append shell metacharacters or additional commands to the expected value. The publicly available proof-of-concept targets a pullFile operation, indicating the injection point is reachable through a file transfer function exposed by the WebSocket server. Exploitation requires network reachability to the WebSocket endpoint and low-level privileges on the target service.
Root Cause
The root cause is improper neutralization of special elements used in an OS command [CWE-77]. The path argument received over the WebSocket channel is concatenated into a shell command string without escaping, quoting, or validation. Any shell metacharacter such as ;, |, &&, or backticks is interpreted by the underlying shell, allowing arbitrary command execution alongside the intended operation.
Attack Vector
The attack is remote and network-based. An attacker with the ability to reach the sonic-agent WebSocket server sends a crafted request containing malicious shell syntax in the path parameter. The injected commands execute with the privileges of the sonic-agent process on the host device. Publicly available exploit code is hosted in the GitHub PoC Repository, lowering the barrier to exploitation.
No verified code examples are available for reproduction here. Refer to the VulDB Vulnerability Report for additional technical context.
Detection Methods for CVE-2026-15495
Indicators of Compromise
- WebSocket requests to the sonic-agent Android WebSocket Server containing shell metacharacters such as ;, |, &&, $(, or backticks in the path parameter
- Unexpected child processes spawned by the sonic-agent Java process on Android host devices
- Outbound network connections initiated from the sonic-agent process to unfamiliar hosts following inbound WebSocket traffic
Detection Strategies
- Inspect WebSocket traffic destined for sonic-agent endpoints and flag path values containing shell control characters or command separators
- Correlate inbound WebSocket sessions with subsequent process creation events on the host to identify anomalous command execution chains
- Monitor AndroidWSServer.java request logs for pullFile invocations with non-standard argument structures matching the public proof-of-concept
Monitoring Recommendations
- Enable process creation logging on hosts running sonic-agent and alert on shell interpreters (sh, bash) spawned by the agent process
- Capture and retain WebSocket-layer traffic for the sonic-agent service to support retrospective hunting
- Track network egress from devices running sonic-agent to detect post-exploitation command-and-control activity
How to Mitigate CVE-2026-15495
Immediate Actions Required
- Decommission or isolate sonic-agent deployments running versions up to 2.7.2, as the product is no longer supported and no vendor patch is available
- Restrict network access to the Android WebSocket Server so only trusted management hosts can reach the service
- Review historical WebSocket traffic and host process logs for signs of prior exploitation using the publicly disclosed PoC
Patch Information
No official patch is available. The vendor did not respond to the disclosure, and the affected product is no longer maintained. Organizations should plan migration to a supported alternative and treat continued use as an accepted risk requiring compensating controls.
Workarounds
- Place sonic-agent behind a network segmentation boundary or firewall rule that blocks untrusted WebSocket clients
- Enforce mutual TLS or authenticated reverse proxy in front of the WebSocket server to prevent unauthenticated network reach
- Remove or disable the pullFile functionality where operationally feasible to eliminate the exposed injection sink
# Configuration example: restrict WebSocket server exposure with iptables
iptables -A INPUT -p tcp --dport 8080 -s <trusted_management_ip> -j ACCEPT
iptables -A INPUT -p tcp --dport 8080 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
