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CVE-2026-63077: How a TeamCity Deserialization Flaw Opens the Door to RCE
posted by fidelissecurityfidelissecurity 1 hour, 21 minutes ago
Monday, August 24, 2026 5:23:30 AM GMT
CVE-2026-63077: How a TeamCity Deserialization Flaw Opens the Door to RCE

CVE-2026-63077 is a critical deserialization of untrusted data vulnerability in JetBrains TeamCity On-Premises. An unauthenticated attacker with HTTP(S) access to a vulnerable TeamCity server can abuse the agent polling protocol to bypass authentication checks and execute arbitrary operating system commands with the privileges of the TeamCity server process.

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