VulnerabilityDeferred

CVE-2026-2577

An unauthenticated remote attacker with network access to the bridge can connect to the WebSocket server to hijack the WhatsApp session.

CRITICAL 10.0EPSS 0.65%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.65%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

The WhatsApp bridge component in Nanobot binds the WebSocket server to all network interfaces (0.0.0.0) on port 3001 by default and does not require authentication for incoming connections. An unauthenticated remote attacker with network access to the bridge can connect to the WebSocket server to hijack the WhatsApp session. This allows the attacker to send messages on behalf of the user, intercept all incoming messages and media in real-time, and capture authentication QR codes.

CVSS 3.1: 10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
EPSS: 0.65% probability · 49th percentile
CISA KEV: Not listed
Weakness: CWE-306
Source: vulnreport@tenable.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.