VULNERABILITY INTELLIGENCE
CVE-2026-55536
CVSS score9.1 CRITICAL
EPSS probability0.52%
CISA KEVNot currently listed
Published2026-08-25
Last modified2026-09-09
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Description
PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, Browser Server _handle_connection() checks Chrome extension origins with re.match() and the unanchored expression chrome-extension://[a-z0-9]{32}. Extra trailing characters pass before websocket.accept(), allowing start_session commands and unauthorized browser automation. This issue is fixed in version 4.6.58.
Weakness classification
- security-advisories@github.com: CWE-284