Uncontrolled Search Path Element Affecting psy/psysh package, versions <0.11.23>=0.12.0, <0.12.19
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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-PSYPSYSH-15166606
- published1 Feb 2026
- disclosed30 Jan 2026
- creditAqhmal Hafizi
Introduced: 30 Jan 2026
CVE-2026-25129 (opens in a new tab)How to fix?
Upgrade psy/psysh to version 0.11.23, 0.12.19 or higher.
Overview
Affected versions of this package are vulnerable to Uncontrolled Search Path Element via the automatic loading and execution of .psysh.php from the current working directory during startup. An attacker can execute arbitrary code with the privileges of the victim process by placing a malicious .psysh.php file in a directory writable by the attacker, which is later used as the current working directory by a user launching the application.