medium6.5
CVE-2026-57120
PraisonAI: execute_code sandbox bypass: str.format C-level attribute access reads every blocklisted dunder
Impact
PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.59, execute_code sandbox mode permits runtime assembly of blocklisted dunder names and allows str.format or str.format_map to resolve dotted fields through C-level attribute access that bypasses _safe_getattr. This exposes class, qualified-name, base-class, globals, and object-dictionary attributes to prompt-influenced code when approval is automatically granted, producing a high-impact read primitive without establishing a complete in-process execution chain. This issue is fixed in praisonaiagents 1.6.59.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | praisonaiagents | < 1.6.59 | 1.6.59 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-pv2j-rghr-v5r9
- https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-pv2j-rghr-v5r9
- https://github.com/MervinPraison/PraisonAI/commit/2adfe7e8323f6deec66925cf15a885b6238895e9
- https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.59