CVE-2026-4263

Name: CVE-2026-4263
Creator: NVD / NIST
Published: 2026-03-26T10:16:26.173+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.9/10EPSS 0.26%

Last modified Jun 17, 2026

CVE-2026-4263 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. 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'.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

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'.

Metrics

CVSS 4.0

6.9/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.26%

17.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

References

https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-hijiffy-chatbot

Timeline

Published: Mar 26, 2026
Last Modified: Jun 17, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2026-4263?

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'.

How severe is CVE-2026-4263?

CVE-2026-4263 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.

How do I fix CVE-2026-4263?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-4263?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST