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Ubuntu Security NoticesUSN-8740-1

USN-8740-1: .NET vulnerabilities

Weeraphat Srisutham discovered that the .NET watch BrowserRefreshServer did not properly validate cross-origin WebSocket connections. An attacker could possibly use this issue to expose sensitive information. (CVE-2026-58649) Rajesh Chada discovered that the .NET watch AspireServerService improperly exposed information through the use of certain arguments. An attacker could possibly use this issue to elevate privileges and execute arbitrary code. (CVE-2026-69806)

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Scope

What the vendor says is affected

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Timeline

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  1. Published by Ubuntu

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-58649View CVSS, KEV, EPSS, and threat contextCVE-2026-69806View CVSS, KEV, EPSS, and threat context
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