EUVD-2026-21166
GHSA-f2h6-7xfr-xm8w
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Lifecycle Timeline
4Tags
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.
Analysis
Disk exhaustion in PraisonAI prior to 4.5.128 allows remote attackers to consume arbitrary disk space by publishing malicious recipe bundles containing highly compressible data that expand dramatically during extraction. The vulnerability exists in the _safe_extractall() function, which validates only path traversal attacks but lacks checks on individual member sizes, cumulative extracted size, or member count before tar extraction, enabling an unauthenticated attacker to trigger denial of service via LocalRegistry.pull() or HttpRegistry.pull() with minimal user interaction.
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