CVE-2026-40148

Medium

Description

PraisonAI is a multi-agent teams system. Prior to 4.5.128, the _safe_extractall() function in PraisonAI's recipe registry validates archive members against path traversal attacks but performs no checks on individual member sizes, cumulative extracted size, or member count before calling tar.extractall(). An attacker can publish a malicious recipe bundle containing highly compressible data (e.g., 10GB of zeros compressing to ~10MB) that exhausts the victim's disk when pulled via LocalRegistry.pull() or HttpRegistry.pull(). This vulnerability is fixed in 4.5.128.

SeverityMedium

CVSS6.5

Exploit probability—

ProductPraisonai

PublishedApr 9, 2026

First seenApr 9, 2026

Weakness typeCWE-409CWE-409

How to fix

Update

praison praisonai4.5.128 or later
praisonai4.5.128 or later

Affected products

Product	Affected versions	Fixed in
praison praisonai	v < 4.5.128	4.5.128
praisonaiPyPI	v < 4.5.128	4.5.128

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