CVE-2023-2887: User Authentication Bypass in CBOT's Chatbot

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-05-25 · updated 2026-06-17
Weakness: CWE-290

Description

Authentication Bypass by Spoofing vulnerability in CBOT Chatbot allows Authentication Bypass. This issue affects Chatbot: before Core: v4.0.3.4 Panel: v4.0.3.7.

Affected products

Cbot Core: before 4.0.3.4 — fixed in 4.0.3.4
Cbot Panel: before 4.0.3.7 — fixed in 4.0.3.7

How to fix

Upgrade to a fixed version: Cbot Core 4.0.3.4; Cbot Panel 4.0.3.7. Check the vendor advisory for mitigations.

References

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-23-0293
https://www.usom.gov.tr/bildirim/tr-23-0293
https://www.usom.gov.tr/bildirim/tr-23-0293

Get alerted when CVE-2023-2887 or the next vulnerability affects your stack