{"id":"CVE-2026-56076","title":"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","summary":"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-Cont…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","cwe":["CWE-942"],"vendor":"PraisonAI","product":"PraisonAI","affected":["PraisonAI < 1.5.128"],"published":"2026-06-18","updated":"2026-10-08","sourceUpdated":"2026-10-08T16:17:21.253","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-56076","references":[{"url":"https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x462-jjpc-q4q4","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/praisonai-cross-origin-agent-execution-via-hardcoded-wildcard-cors-and-missing-authentication-on-agui-endpoint","label":"disclosure@vulncheck.com"},{"url":"https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x462-jjpc-q4q4","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-06-22T15:36:05.630759Z"},"epss":0.00743,"epssPercentile":0.53291,"ingestedAt":"2026-10-08T16:52:14.690Z","slug":"CVE-2026-56076","body":"## Overview\n\nPraisonAI 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":57,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}