Incorrect authorization in HiJiffy Chatbot

published 2026-03-26 7mo ago modified 2026-06-17 4mo ago also EUVD-2026-16150

cvss: 6.9; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits: 0; none known

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'.

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CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 7mo ago (2026-03-26)

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	4.0	6.9	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
CNA	4.0	6.9	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

Affected products

HiJiffy HiJiffy Chatbot

Classification

Weakness

CWE-863 Incorrect Authorization

References

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

Sources

CVE List CVE-2026-4263
NVD CVE-2026-4263

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