Arbitrary Argument Injection Affecting symfony/process package, versions <5.4.51>=6.4.0-BETA1, <6.4.33>=7.3.0-BETA1, <7.3.11>=7.4.0-BETA1, <7.4.5>=8.0.0-BETA1, <8.0.5
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-SYMFONYPROCESS-15147051
- published29 Jan 2026
- disclosed28 Jan 2026
- creditJordi Boggiano
Introduced: 28 Jan 2026
CVE-2026-24739 (opens in a new tab)How to fix?
Upgrade symfony/process to version 5.4.51, 6.4.33, 7.3.11, 7.4.5, 8.0.5 or higher.
Overview
Affected versions of this package are vulnerable to Arbitrary Argument Injection via incorrect argument escaping in the Process component when executed under MSYS2-based environments on Windows. An attacker can cause destructive file operations, such as unintended deletion of directories or drives, by influencing process arguments through untrusted input, including repository paths, extracted archive paths, temporary directories, or user-controlled configuration.
Workaround
This vulnerability can be mitigated by avoiding the use of MSYS2-based shells for running PHP or related tooling, preferring cmd.exe or PowerShell, avoiding passing paths with '=' or similar characters to process arguments, or configuring MSYS2 to disable or restrict argument conversion (e.g., via MSYS2_ARG_CONV_EXCL).