Improper access control in Sourcetree for macOS and Sourcetree for Windows - CVE-2026-21575
Published: July 22, 2026 / Updated: July 22, 2026
Vulnerability identifier: #VU139072
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-21575
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Atlassian
Affected software:
Sourcetree for macOS
Sourcetree for Windows
Sourcetree for macOS
Sourcetree for Windows
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to improper access control in Sourcetree for Windows when handling crafted content. A remote attacker can trick the victim into processing crafted content to execute arbitrary code.
User interaction is required for exploitation.
How to mitigate CVE-2026-21575
Install security update from vendor's website.