High severity8.8NVD Advisory· Published Oct 23, 2026· Updated Oct 29, 2026
CVE-2026-56840
CVE-2026-56840
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.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
praisonaiPyPI | >= 4.5.2, < 4.6.59 | 4.6.59 |
Affected products
1Patches
Vulnerability mechanics
References
2News mentions
1- PraisonAI: Fifteen High-to-Critical Vulnerabilities Disclosed in Multi-Agent SystemVypr Intelligence · Oct 23, 2026