What’s Vulnerable › Vulnerabilities

CVE-2026-56840: PraisonAI: HTTPApproval dashboard renders tool arguments as raw HTML, allowing approval-page XSS to approve dangerous tools

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-23 · updated 2026-10-29
• Weakness: CWE-79

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 products

• MervinPraison PraisonAI: from 4.5.2, < 4.6.59

References

• https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-63v4-w882-g4x2
• https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-63v4-w882-g4x2

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