Critical severity9.1NVD Advisory· Published Aug 25, 2026· Updated Sep 9, 2026
CVE-2026-55536
CVE-2026-55536
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.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
PraisonAIPyPI | < 4.6.58 | 4.6.58 |
Affected products
2Patches
Vulnerability mechanics
References
4News mentions
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