medium6.5
CVE-2026-40148
PraisonAI Vulnerable to Decompression Bomb DoS via Recipe Bundle Extraction Without Size Limits
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | PraisonAI | < 4.5.128 | 4.5.128 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Praison | Praisonai | before 4.5.128 |