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CVE-2026-55536

Browser Server WebSocket origin validation bypass via unanchored regex (patch bypass of CVE-2026-40289 / GHSA-8x8f-54wf-vv92) PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
MervinPraison / PraisonAIaffected < 4.6.58

CWE

CWE-284, CWE-625

References

ADP enrichment

CISA-ADP

No English description supplied.