MervinPraison PraisonAI up to 1.5.89 run_python os command injection

Summaryinfo

A vulnerability classified as critical has been found in MervinPraison PraisonAI up to 1.5.89. Affected by this issue is the function run_python. The manipulation leads to os command injection. This vulnerability is referenced as CVE-2026-34937. The attack can only be performed from a local environment. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in MervinPraison PraisonAI up to 1.5.89 and classified as critical. This issue affects the function run_python. The manipulation with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

PraisonAI is a multi-agent teams system. Prior to version 1.5.90, run_python() in praisonai constructs a shell command string by interpolating user-controlled code into python3 -c "" and passing it to subprocess.run(..., shell=True). The escaping logic only handles \ and ", leaving $() and backtick substitutions unescaped, allowing arbitrary OS command execution before Python is invoked. This issue has been patched in version 1.5.90.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-34937 since 03/31/2026. The exploitation is known to be easy. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

Upgrading to version 1.5.90 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• MervinPraison

Name

• PraisonAI

Version

• 1.5.0
• 1.5.1
• 1.5.2
• 1.5.3
• 1.5.4
• 1.5.5
• 1.5.6
• 1.5.7
• 1.5.8
• 1.5.9
• 1.5.10
• 1.5.11
• 1.5.12
• 1.5.13
• 1.5.14
• 1.5.15
• 1.5.16
• 1.5.17
• 1.5.18
• 1.5.19
• 1.5.20
• 1.5.21
• 1.5.22
• 1.5.23
• 1.5.24
• 1.5.25
• 1.5.26
• 1.5.27
• 1.5.28
• 1.5.29
• 1.5.30
• 1.5.31
• 1.5.32
• 1.5.33
• 1.5.34
• 1.5.35
• 1.5.36
• 1.5.37
• 1.5.38
• 1.5.39
• 1.5.40
• 1.5.41
• 1.5.42
• 1.5.43
• 1.5.44
• 1.5.45
• 1.5.46
• 1.5.47
• 1.5.48
• 1.5.49
• 1.5.50
• 1.5.51
• 1.5.52
• 1.5.53
• 1.5.54
• 1.5.55
• 1.5.56
• 1.5.57
• 1.5.58
• 1.5.59
• 1.5.60
• 1.5.61
• 1.5.62
• 1.5.63
• 1.5.64
• 1.5.65
• 1.5.66
• 1.5.67
• 1.5.68
• 1.5.69
• 1.5.70
• 1.5.71
• 1.5.72
• 1.5.73
• 1.5.74
• 1.5.75
• 1.5.76
• 1.5.77
• 1.5.78
• 1.5.79
• 1.5.80
• 1.5.81
• 1.5.82
• 1.5.83
• 1.5.84
• 1.5.85
• 1.5.86
• 1.5.87
• 1.5.88
• 1.5.89

Website

• Product: https://github.com/MervinPraison/PraisonAI/

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