CVE-2026-39891: PraisonAI has Template Injection in Agent Tool Definitions

April 8, 2026 (updated April 9, 2026)

Direct insertion of unescaped user input into template-rendering tools allows arbitrary code execution via specially crafted agent instructions.

References

github.com/MervinPraison/PraisonAI
github.com/MervinPraison/PraisonAI/releases/tag/v4.5.115
github.com/MervinPraison/PraisonAI/security/advisories/GHSA-hwg5-x759-7wjg
github.com/advisories/GHSA-hwg5-x759-7wjg
nvd.nist.gov/vuln/detail/CVE-2026-39891

Code Behaviors & Features

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