What’s Vulnerable › Vulnerabilities
CVE-2026-40148: PraisonAI Affected by Decompression Bomb DoS via Recipe Bundle Extraction Without Size Limits
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-04-09 · updated 2026-10-26
- Weakness: CWE-409
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.
Affected products
- MervinPraison PraisonAI: before 4.5.128 — fixed in 4.5.128
How to fix
Upgrade to a fixed version: MervinPraison PraisonAI 4.5.128. Check the vendor advisory for mitigations.
References
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