Auth bypass in Mervinpraison Praisonai
CVE-2026-57137
PraisonAI is a multi-agent teams system. From 1.4.0 until 1.7.2, createAgentLoop() in src/praisonai-ts/src/ai/agent-loop.ts passes executable tools to generateText() before invoking the onToolCall approval callback. Because the wrapped AI SDK executes tool handlers during generation, a callback that returns false records tool_rejected only after the denied tool has already produced side effects and populated toolResults. Applications using onToolCall as a human or policy approval boundary can therefore execute rejected file, command, API, or data-modifying operations. This issue is fixed in version 1.7.2.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Mervinpraison Praisonai — versions >= 1.4.0, < 1.7.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-57137?
- CVE-2026-57137 is a high-severity vulnerability in Mervinpraison Praisonai, classified under Protection Mechanism Failure. CVSS score: 8.8/10. Published 2026-09-15.
- How severe is CVE-2026-57137?
- High severity. CVSS v3 base score is 8.8 out of 10.