Authorization Bypass in HiJiffy Chatbot Exposes Private Messages

Publication date: 2026-03-26

Last updated on: 2026-05-19

Assigner: Spanish National Cybersecurity Institute, S.A. (INCIBE)

Description

Vulnerability of incorrect authorization in HiJiffy Chatbot allows an attacker to download private messages from other users via the parameter 'visitor' in '/api/v1/webchat/message'.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-03-26

Last Modified

2026-05-19

Generated

2026-07-06

AI Q&A

2026-03-26

EPSS Evaluated

2026-07-05

NVD

CVE-2026-4263

EUVD

EUVD-2026-16150

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-863	The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

Attack-Flow Graph

Executive Summary

This vulnerability is an incorrect authorization issue in the HiJiffy Chatbot. It allows an attacker to download private messages from other users by exploiting the 'visitor' parameter in the '/api/v1/webchat/message' endpoint.

Impact Analysis

The vulnerability can lead to unauthorized access to private messages of other users, potentially exposing sensitive or confidential information. This can result in privacy breaches and loss of trust in the affected system.

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