CVE-2024-48140Public exploitNetwork attack vector

Chat exfiltration via persistent prompt injection

Published Oct 24, 2024 · Updated Oct 25, 2024

Prompt injection in Monica 6.3.0 allows remote attackers to exfiltrate chat history and future conversations via a crafted message. The browser extension's chatbox treats the message as AI instructions and persistently sends earlier and later chat content to an attacker-controlled site. The attacker must place the crafted prompt in the chat window; the documented consequence is disclosure of personal communications, with no reported integrity or availability effect.

CVSS severity7.5
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Prompt injection in Monica 6.3.0 allows remote attackers to exfiltrate chat history and future conversations via a crafted message. The browser extension's chatbox treats the message as AI instructions and persistently sends earlier and later chat content to an attacker-controlled site. The attacker must place the crafted prompt in the chat window; the documented consequence is disclosure of personal communications, with no reported integrity or availability effect.

The record

CVE
CVE-2024-48140
Published
Oct 24, 2024
Updated
Oct 25, 2024
Vendor
Butterfly Effect Pte. Ltd.
Product
Monica
Classifications
CWE-77, T1020
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 24, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 25, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Butterfly Effect Pte. Ltd. · Monicaversion=6.3.0

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1020Automated Exfiltration

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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