CVE-2024-40492Public exploitNetwork attack vector

Session theft via stored profile-name script injection

Published Jul 17, 2024 · Updated Aug 2, 2024

Stored XSS in Heartbeat Chat 15.2.1 allows remote attackers to run scripts in another user's browser through crafted profile names. The setname path stores crafted first- and last-name HTML and renders it in user listings and Threads search results without neutralization. A victim must view the user section or search for the crafted name, after which the script can expose the victim's session and enable account takeover.

CVSS severity7.1
High
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Heartbeat Chat 15.2.1 allows remote attackers to run scripts in another user's browser through crafted profile names. The setname path stores crafted first- and last-name HTML and renders it in user listings and Threads search results without neutralization. A victim must view the user section or search for the crafted name, after which the script can expose the victim's session and enable account takeover.

The record

CVE
CVE-2024-40492
Published
Jul 17, 2024
Updated
Aug 2, 2024
Vendor
Heartbeat Chat
Product
Heartbeat Chat
Classifications
CWE-79, T1539
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=15.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Heartbeat Chat · Heartbeat Chatversion=15.2.1

Published CVSS scores

7.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1539Steal Web Session Cookie

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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