CVE-2026-40148CWE-409

PraisonAI Affected by Decompression Bomb DoS via Recipe Bundle Extraction Without Size Limits

Medium · published April 9, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
30.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00375 · 30.2th percentile
Weakness
CWE-409 · Improper Handling of Highly Compressed Data (Data Amplification)
Published
2026-04-09T21:22Z
EPSS history
Timeline
  • 09 APR 21:22Z
    PraisonAI Affected by Decompression Bomb DoS via Recipe Bundle Extraction Without Size Limits
    cvelistv5