CVE-2022-0502Network attack vector

Stored script execution via AngularJS template evaluation

Published Feb 6, 2022 · Updated Aug 2, 2024

Stored XSS in Live Helper Chat before 3.93 allows remote authenticated users to execute script in another user’s browser through canned messages. The canned-message editing templates HTML-escape stored Message and FallbackMessage values but leave the textareas bindable, so AngularJS evaluates injected template expressions. Authenticated access to save a canned message and a subsequent view of that message are required, exposing the viewer’s browser session to attacker-controlled script.

CVSS severity5.4
Medium
EPSS probability0.61%
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 Live Helper Chat before 3.93 allows remote authenticated users to execute script in another user’s browser through canned messages. The canned-message editing templates HTML-escape stored Message and FallbackMessage values but leave the textareas bindable, so AngularJS evaluates injected template expressions. Authenticated access to save a canned message and a subsequent view of that message are required, exposing the viewer’s browser session to attacker-controlled script.

The record

CVE
CVE-2022-0502
Published
Feb 6, 2022
Updated
Aug 2, 2024
Vendor
LiveHelperChat
Product
Live Helper Chat
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 6, 2022CVE 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=unspecified <3.93v

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

LiveHelperChat · Live Helper Chatversion=unspecified <3.93v

Published CVSS scores

6.5huntr.devCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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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