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Vulnerability record · CVE-2026-21575 · published 21 July 2026

CVE-2026-21575: Atlassian sourcetree code injection vulnerability

Atlassian · Sourcetree

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.

8.0 CVSS 3.1 High EPSS 0.59% · top 54.0% CWE-94 · Code injection
8.0CVSS 3.1 base score
0.59%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
10 Aug 2026Last modified by 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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://confluence.atlassian.com/pages/viewpage.action?pageId=1821999345 Vendor Advisory
https://jira.atlassian.com/browse/SRCTREE-8275 Issue Tracking

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-13385Atlassian sourcetree argument injection vulnerabilityThere was an argument injection vulnerability in Sourcetree for macOS via filenames in Mercurial repositories. An attacker with permission to commit …EPSS 2.2%9.8CVE-2017-8768Atlassian sourcetree os command injection vulnerabilityAtlassian SourceTree v2.5c and prior are affected by a command injection in the handling of the sourcetree:// scheme. It will lead to arbitrary OS co…EPSS 8.3%8.8CVE-2024-21697Atlassian sourcetree vulnerabilityThis High severity RCE (Remote Code Execution) vulnerability was introduced in versions 4.2.8 of Sourcetree for Mac and 3.4.19 for Sourcetree for Win…EPSS 0.74%8.8CVE-2019-11582Atlassian sourcetree argument injection vulnerabilityAn argument injection vulnerability in Atlassian Sourcetree for Windows's URI handlers, in all versions prior to 3.1.3, allows remote attackers to ga…EPSS 4.9%8.8CVE-2018-20234Atlassian sourcetree argument injection vulnerabilityThere was an argument injection vulnerability in Atlassian Sourcetree for macOS from version 1.2 before version 3.1.1 via filenames in Mercurial repo…EPSS 5.9%8.8CVE-2018-20235Atlassian sourcetree vulnerabilityThere was an argument injection vulnerability in Atlassian Sourcetree for Windows from version 0.5a before version 3.0.15 via filenames in Mercurial …EPSS 6.7%8.8CVE-2018-20236Atlassian sourcetree command injection vulnerabilityThere was an command injection vulnerability in Sourcetree for Windows from version 0.5a before version 3.0.10 via URI handling. A remote attacker co…EPSS 6.4%8.8CVE-2018-13396Atlassian sourcetree vulnerabilityThere was an argument injection vulnerability in Sourcetree for macOS from version 1.0b2 before version 3.0.0 via Git subrepositories in Mercurial re…EPSS 1.9%

Source: NIST National Vulnerability Database (record CVE-2026-21575), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.