CVE-2026-56840
High
Description
PraisonAI is a multi-agent teams system. From version 4.5.2 to before version 4.6.59, praisonai.bots.HTTPApproval renders pending tool approval arguments directly into the approval dashboard HTML. An attacker-controlled tool argument can inject JavaScript into that page. When a human opens the approval URL to inspect the risky tool request, the script runs in the dashboard origin and can POST to the same request's /approve/{request_id}/decide endpoint, causing HTTPApproval to return approved=True. This issue has been patched in version 4.6.59.
SeverityHigh
CVSS8.8
Exploit probability—
ProductPraisonai
PublishedOct 23, 2026
First seenOct 23, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- praisonai4.6.59 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| praisonaiPyPI | 4.5.2 ≤ v < 4.6.59 | 4.6.59 |
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