CVE-2026-4263 Incorrect authorization in HiJiffy Chatbot
Attackers can download private messages from other users by manipulating the visitor parameter in the chatbot API.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4263?
CVE-2026-4263 is a medium-severity missing authorization vulnerability in HiJiffy Chatbot, published on 26 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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'.
Weakness: CWE-863
Which versions are affected by CVE-2026-4263?
How do I fix CVE-2026-4263?
No fix has been published for CVE-2026-4263 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-4263 being exploited?
There is no known exploitation of CVE-2026-4263 in the wild and no public exploit code.
Sources
Also known as GHSA-vv27-wprx-cxj7.