SEPTEMBER 7, 2026
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Case File

CVE-2026-21575

HIGH · CVSS 8 EPSS 0.32% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-21 · Last synced 2026-08-20

CyberRota Analysis

AI-Generated

An authenticated attacker can exploit a high-severity remote code execution vulnerability in Sourcetree for Mac and Windows, introduced in version 3.4.11, to execute arbitrary code, significantly compromising confidentiality, integrity, and availability. Users of affected versions should prioritize upgrading to at least version 3.4.13 to mitigate this risk. Organizations utilizing Sourcetree for version management should take immediate action to secure their environments against potential exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
remote code execution code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-21575
Severity
HIGH
CVSS
8
EPSS
0.32%
Windows

Original NVD Description

This High severity RCE (Remote Code Execution) vulnerability was introduced in version 3.4.11 of Sourcetree for Mac and Sourcetree for Windows. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to execute arbitrary code which has high impact to confidentiality, high impact to integrity, high impact to availability, and requires user interaction. Atlassian recommends that Sourcetree for Mac and Sourcetree for Windows customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: * Sourcetree for Mac and Sourcetree for Windows 3.4: Upgrade to a release greater than or equal to 3.4.13 See the release notes (https://www.sourcetreeapp.com/download-archives). You can download the latest version of Sourcetree for Mac and Sourcetree for Windows from the download center (https://www.sourcetreeapp.com/download-archives). This vulnerability was reported via our Bug Bounty program.

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