Path Traversal Enables Arbitrary Script Execution in PraisonAI

PraisonAI before 1.6.78 contains a remote code execution vulnerability in SkillTools.run_skill_script() that executes scripts without path containment validation. Attackers can supply absolute file paths to execute arbitrary scripts from any filesystem location, including those outside the intended working directory.

Casky was already ahead

This CVE exploits attack patterns that Casky's 351matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

PraisonAI versions before 1.6.78 fail to validate file paths in the SkillTools.run_skill_script() function, allowing attackers to execute arbitrary scripts from any filesystem location. By supplying absolute paths instead of relative ones, an attacker can break out of the intended working directory and execute malicious code anywhere on the system. This vulnerability affects organizations deploying PraisonAI for automated task execution, particularly those integrating it with Claude AI for skill-based workflows. The CVSS 8.1 rating reflects the high severity—remote code execution without authentication requirements creates immediate risk for data exfiltration, lateral movement, and system compromise.

Casky's 351 matching skills detect the attack patterns underlying this vulnerability by mapping to MITRE ATT&CK techniques TA0001 (Initial Access) and TA0007 (Discovery). Practitioners using Casky would identify suspicious path traversal indicators such as absolute filesystem paths in SkillTools function calls, unusual script execution from out-of-directory locations, and patterns consistent with CWE-22 path traversal exploitation. Claude's extended reasoning capabilities help correlate multiple skill executions to distinguish between legitimate administrative access and exploitation attempts, flagging sequences where attackers enumerate the filesystem (Discovery) before executing malicious scripts (Initial Access). Your findings would surface these attack chains in context, enabling rapid response to compromised PraisonAI instances.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

351 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-61443.

Abuse of Public-Facing API: Mobile API Abuse

mobile security · low

Run

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

MITRE ATT&CK Techniques

TA0001 TA0007

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