HKUDS nanobot up to 0.1.3.Post6 WhatsApp Bridge missing authentication

CVSS Meta Temp Score
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in HKUDS nanobot up to 0.1.3.Post6. The impacted element is an unknown function of the component WhatsApp Bridge. This manipulation causes missing authentication. This vulnerability is tracked as CVE-2026-2577. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in HKUDS nanobot up to 0.1.3.Post6. Affected by this vulnerability is some unknown processing of the component WhatsApp Bridge. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at tenable.com. This vulnerability is known as CVE-2026-2577 since 02/16/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

Upgrading to version 0.1.3.Post7 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-6101). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.6
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 10.0
CNA Vector (tenable): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing authentication
CWE: CWE-306 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: nanobot 0.1.3.Post7

Timelineinfo

02/16/2026 Advisory disclosed
02/16/2026 +0 days CVE reserved
02/16/2026 +0 days VulDB entry created
02/20/2026 +4 days VulDB entry last update

Sourcesinfo

Advisory: tenable.com
Status: Confirmed

CVE: CVE-2026-2577 (🔒)
GCVE (CVE): GCVE-0-2026-2577
GCVE (VulDB): GCVE-100-346177
EUVD: 🔒

Entryinfo

Created: 02/16/2026 11:26
Updated: 02/20/2026 08:22
Changes: 02/16/2026 11:26 (64), 02/17/2026 22:58 (1), 02/20/2026 08:22 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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