CVE-2026-40157

PraisonAI affected by arbitrary file write via path traversal in `praisonai recipe unpack`

State: Published
Severity: 9.4 Critical
Published: Apr 10, 2026
Updated: Apr 14, 2026
Reserved: Apr 9, 2026

Description

PraisonAI is a multi-agent teams system. Prior to 4.5.128, cmd_unpack in the recipe CLI extracts .praison tar archives using raw tar.extract() without validating archive member paths. A .praison bundle containing ../../ entries will write files outside the intended output directory. An attacker who distributes a malicious bundle can overwrite arbitrary files on the victim's filesystem when they run praisonai recipe unpack. This vulnerability is fixed in 4.5.128.

Scores

CVSS	Score	Vector	Source
4.0	9.4 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	GitHub_M

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected Products

Product	Versions
PraisonAIMervinPraison	< 4.5.128Affected

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-99g3-w8gr-x37c

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