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JetBrains warns of critical TeamCity remote code execution flaw

JetBrains has issued a patch for a critical remote code execution vulnerability in its TeamCity software, designated CVE-2026-63077.

By · Published August 1, 2026 at 07:37 UTC · Updated August 1, 2026 at 08:24 UTC

6sources
6articles
4velocity
+31%since first seen
13h agofirst detected

Evidence dossier

Intelligence passport

62/100 Strong
6distinct sources shown
14velocity measurements
1language editions checked
Unsupported statements were removed before publicationbrief evidence status

Measured timeline

  1. Detected The first matching coverage entered the Archynetys cluster.
  2. Latest coverage observed Most recent article currently attached to this story cluster.
  3. Peak measured velocity The recorded velocity reached 4.
  4. Evidence threshold reached The story had enough independent coverage for an explanatory brief.

Source diversity sample: tipranks.com · csoonline.com · The Cyber Express · SecurityWeek · The Hacker News · BleepingComputer.

How this dossier is built: methodology · AI policy · corrections.

The obvious questions

What is the nature of the TeamCity vulnerability?

It is a critical remote code execution flaw (CVE-2026-63077) that permits the execution of OS commands without authentication.

How is the flaw triggered?

The vulnerability is activated through a crafted HTTP request sent to the TeamCity server.

Has a fix been released?

Yes, JetBrains has released a patch for the on-premises version of the software.

The story so far

JetBrains has released a security patch to address a critical remote code execution vulnerability affecting its TeamCity on-premises platform. Identified as CVE-2026-63077, the flaw allows unauthorized individuals to execute operating system commands without requiring login credentials. The vulnerability is triggered by a specially crafted HTTP request sent to the server.

Coverage emphasizes that the vulnerability significantly elevates the demand for security visibility tools like Censys to detect exposure. While the patch is available, coverage does not yet specify the total number of affected installations or confirm if the vulnerability is being actively exploited in the wild. Monitoring will focus on the rate of patch adoption across enterprise environments.

Industry guidance currently centers on the immediate application of the JetBrains update to mitigate the risk of command execution. Specific technical details regarding the mitigation process or potential workarounds for those unable to patch immediately remain limited to the official JetBrains documentation.

Synthesized by Archynetys from the headlines below under a strict no-invention contract. ✓ fact-checked: unsupported claims removed (89% supported) Updated 1h ago.

Sources (6)

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Topics

JetBrains TeamCity CVE-2026-63077 Cybersecurity Vulnerability

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