Description
PraisonAI is a multi-agent teams system. Prior to version 4.5.90, MCPToolIndex.search_tools() compiles a caller-supplied string directly as a Python regular expression with no validation, sanitization, or timeout. A crafted regex causes catastrophic backtracking in the re engine, blocking the Python thread for hundreds of seconds and causing a complete service outage. This issue has been patched in version 4.5.90.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| MervinPraison | PraisonAI | < 4.5.90 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | praisonai | < 4.5.90 | 4.5.90 | GHSA-8w9j-hc3g-3g7f |