VulnerableCode Package Details - pkg:composer/psy/psysh@0.3.4

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Vulnerability	Summary	Fixed by
VCID-w4bw-d9ar-suh1 Aliases: CVE-2026-25129 GHSA-4486-gxhx-5mg7	PsySH is a runtime developer console, interactive debugger, and REPL for PHP. Prior to versions 0.11.23 and 0.12.19, PsySH automatically loads and executes a `.psysh.php` file from the Current Working Directory (CWD) on startup. If an attacker can write to a directory that a victim later uses as their CWD when launching PsySH, the attacker can trigger arbitrary code execution in the victim's context. When the victim runs PsySH with elevated privileges (e.g., root), this results in local privilege escalation. This is a CWD configuration poisoning issue leading to arbitrary code execution in the victim user’s context. If a privileged user (e.g., root, a CI runner, or an ops/debug account) launches PsySH with CWD set to an attacker-writable directory containing a malicious `.psysh.php`, the attacker can execute commands with that privileged user’s permissions, resulting in local privilege escalation. Downstream consumers that embed PsySH inherit this risk. For example, Laravel Tinker (`php artisan tinker`) uses PsySH. If a privileged user runs Tinker while their shell is in an attacker-writable directory, the `.psysh.php` auto-load behavior can be abused in the same way to execute attacker-controlled code under the victim’s privileges. Versions 0.11.23 and 0.12.19 patch the issue.	0.11.23 Affected by 0 other vulnerabilities. 0.12.19 Affected by 0 other vulnerabilities.

Vulnerability

Summary

Fixed by

VCID-w4bw-d9ar-suh1
Aliases:
CVE-2026-25129
GHSA-4486-gxhx-5mg7

PsySH is a runtime developer console, interactive debugger, and REPL for PHP. Prior to versions 0.11.23 and 0.12.19, PsySH automatically loads and executes a `.psysh.php` file from the Current Working Directory (CWD) on startup. If an attacker can write to a directory that a victim later uses as their CWD when launching PsySH, the attacker can trigger arbitrary code execution in the victim's context. When the victim runs PsySH with elevated privileges (e.g., root), this results in local privilege escalation. This is a CWD configuration poisoning issue leading to arbitrary code execution in the victim user’s context. If a privileged user (e.g., root, a CI runner, or an ops/debug account) launches PsySH with CWD set to an attacker-writable directory containing a malicious `.psysh.php`, the attacker can execute commands with that privileged user’s permissions, resulting in local privilege escalation. Downstream consumers that embed PsySH inherit this risk. For example, Laravel Tinker (`php artisan tinker`) uses PsySH. If a privileged user runs Tinker while their shell is in an attacker-writable directory, the `.psysh.php` auto-load behavior can be abused in the same way to execute attacker-controlled code under the victim’s privileges. Versions 0.11.23 and 0.12.19 patch the issue.

0.11.23
Affected by 0 other vulnerabilities.

0.12.19
Affected by 0 other vulnerabilities.

Vulnerability	Summary	Aliases
This package is not known to fix vulnerabilities.

Vulnerability

Summary

Aliases

This package is not known to fix vulnerabilities.

Date	Actor	Action	Vulnerability	Source	VulnerableCode Version
2026-06-12T20:53:41.627511+00:00	GitLab Importer	Affected by	VCID-w4bw-d9ar-suh1	https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/psy/psysh/CVE-2026-25129.yml	38.6.0

2026-06-12T20:53:41.627511+00:00

GitLab Importer

Affected by

VCID-w4bw-d9ar-suh1

https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/psy/psysh/CVE-2026-25129.yml

38.6.0

Next non-vulnerable version	0.11.23
Latest non-vulnerable version	0.12.19
Risk	3.1