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JetBrains warns of critical TeamCity remote code execution flaw

JetBrains has issued a warning about a critical flaw in TeamCity that could allow remote code execution.

By · Published August 2, 2026  19:52 UTC · Updated August 4, 2026  22:27 UTC

6sources
6articles
4velocity
+0%since first seen
89d agofirst detected
Text:
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Evidence dossier

Intelligence passport

64/100 Strong
6distinct sources shown
40velocity measurements
1language editions checked
Unsupported statements were removed before publicationbrief evidence status

Measured timeline

The obvious questions

What is the vulnerability in TeamCity?

The vulnerability, designated CVE-2026-63077, allows attackers to execute operating system commands without logging in. It can be triggered by a crafted HTTP request.

Has the vulnerability been patched?

Yes, the vulnerability has been patched.

Which installations of TeamCity are affected?

The Cyber Express and SecurityWeek specify that the flaw affects on-premises installations of TeamCity.

The story so far

⚡ Executive Intelligence Takeaways Corroborated across 6 independent newsrooms
  • Velocity & Diffusion: Coverage exploded across 6 distinct news outlets with 6 published articles, achieving a live velocity of 4.
  • Primary Driver: JetBrains has issued a warning about a critical flaw in TeamCity that could allow remote code execution.
  • Predictive Outlook: Archynetys algorithmic models forecast this story will fade from trending status over the next 24 hours.
  • Source Integrity: Verified strictly against primary headline reporting under zero-hallucination protocols.

A critical remote code execution flaw has been identified in JetBrains' TeamCity. The vulnerability, designated CVE-2026-63077, allows attackers to execute operating system commands without logging in. According to coverage from The Cyber Express, SecurityWeek, and The Hacker News, the flaw has been patched. However, the extent of the vulnerability's exploitation remains unclear. BleepingComputer and CSO Online note that the flaw can be triggered by a crafted HTTP request.

The Cyber Express and SecurityWeek specify that the flaw affects on-premises installations of TeamCity. The flaw's potential impact is significant. The Hacker News and BleepingComputer note that it could allow attackers to run arbitrary commands on affected systems. However, the full scope of the vulnerability's impact is not yet clear. The Cyber Express and SecurityWeek specify that the flaw affects on-premises installations of TeamCity.

However, the full scope of the vulnerability's impact is not yet clear. The Cyber Express and SecurityWeek specify that the flaw affects on-premises installations of TeamCity. The vulnerability's discovery has underscored the demand for enhanced security visibility. The Cyber Express and SecurityWeek specify that the flaw affects on-premises installations of TeamCity. The vulnerability's discovery has underscored the demand for enhanced security visibility.

Synthesized by Archynetys from the headlines below under a strict no-invention contract. ✓ fact-checked: unsupported claims removed (83% supported) Updated 87d ago.

Sources (6)

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Topics

TeamCity JetBrains CVE-2026-63077 Remote Code Execution Cybersecurity Software Vulnerability

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