High (7.5). EPSS 0.4% chance of exploitation in the next 30 days.
A prompt injection vulnerability in the chatbox of Butterfly Effect Limited Monica ChatGPT AI Assistant v2.4.0 allows attackers to access and exfiltrate all previous and subsequent chat data between the user and the AI assistant via a crafted message.
Severity
CVSS 3.1
7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-31)