What’s Vulnerable › Vulnerabilities

CVE-2026-56076: PraisonAI - Cross-Origin Agent Execution via Hardcoded Wildcard CORS and Missing Authentication on AGUI Endpoint

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-18 · updated 2026-10-08
• Weakness: CWE-942

Description

PraisonAI before 1.5.128 contains a cross-origin agent execution vulnerability in the AGUI endpoint that allows remote attackers to trigger arbitrary agent execution. The POST /agui endpoint lacks authentication and hardcodes Access-Control-Allow-Origin: * headers, combined with Starlette's Content-Type-agnostic JSON parsing, enabling attackers to bypass CORS preflight checks via simple requests and exfiltrate sensitive agent responses including tool execution results and environment data.

Affected products

• PraisonAI: before 1.5.128 — fixed in 1.5.128

How to fix

Upgrade to a fixed version: PraisonAI 1.5.128. Check the vendor advisory for mitigations.

References

• https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x462-jjpc-q4q4
• https://www.vulncheck.com/advisories/praisonai-cross-origin-agent-execution-via-hardcoded-wildcard-cors-and-missing-authentication-on-agui-endpoint
• https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x462-jjpc-q4q4

Get alerted when CVE-2026-56076 or the next vulnerability affects your stack