CVE-2026-28412

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.5.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "textream", "source": "cna", "vendor": "f"}, "product": "textream", "vendor": "f"}], "analysis": {"en": {"generated_at": "2026-04-17T13:34:45.268983+00:00", "value": {"mitigation_remediation": ["Apply the update to Textream v1.5.1 or newer to enforce a limit on concurrent WebSocket connections.", "Restrict inbound WebSocket connections by configuring the local firewall or network settings, thereby limiting the number of connections that can reach the DirectorServer.", "Monitor system resource consumption during live teleprompter sessions; if CPU or memory usage spikes, terminate the application to prevent prolonged denial of service."], "summary": {"action": "Immediate Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "The affected product is Textream, a macOS teleprompter application by the vendor f:. Versions prior to 1.5.1 are vulnerable; version 1.5.1 includes the fix that restricts the connection count.", "description_and_impact": "The vulnerability stems from a lack of limits on concurrent WebSocket connections to the DirectorServer. Coupled with a broadcast timer that pushes state updates every 100\u202fms to all clients, an attacker can flood the server with connections, causing the application to consume excessive CPU and memory and eventually freeze or crash during a live broadcast. This leads to a denial of service for the user running the teleprompter during critical sessions.", "risk_and_exploitability": "The CVSS score of 6.5 indicates a medium-to-high severity vulnerability, while the EPSS score of less than 1\u202f% suggests that, at the time of analysis, exploitation is considered unlikely. The vulnerability is not listed in the CISA KEV catalog. The attack vector is inferred to be remote, as it relies on WebSocket connections that can be established from external clients. An attacker would need network access to the machine running Textream to initiate the flood of connections."}}}}, "created": "2026-03-03T08:43:09.200344+00:00", "updated": "2026-04-17T13:45:16.022161+00:00", "vendors": ["f", "f$PRODUCT$textream"]}