CVE-2026-55536

Published: Aug 25, 2026Modified: Aug 28, 2026

9.1

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitability: 3.9 / Impact: 5.2

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Permissive Regular Expression

The product uses a regular expression that does not sufficiently restrict the set of allowed values.

References (4)

https://github.com/MervinPraison/PraisonAI/commit/2f9677abb2ea68eab864ee8b6a828fd0141612e1

Source: security-advisories@github.com

https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.58

Source: security-advisories@github.com

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-6g6r-q6gw-w8fg

Source: security-advisories@github.com

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-6g6r-q6gw-w8fg

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.