CVE-2023-3245Public exploitNetwork attack vector

Stored XSS via unsanitized custom-channel link

Published Jul 17, 2023 · Updated Apr 23, 2025

Stored cross-site scripting in Premio Chaty before 3.1.2 allows remote authenticated users to execute scripts via widget settings. The custom-channel link setting accepts a JavaScript URL or HTML event-handler payload and renders the saved value in visitor-facing widget markup without sanitization or output escaping. Administrator-level access is required, and the flaw matters when unfiltered HTML is disabled, including WordPress multisite deployments; opening the affected page or clicking the generated link runs the stored script in that visitor's browser.

CVSS severity4.8
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Premio Chaty before 3.1.2 allows remote authenticated users to execute scripts via widget settings. The custom-channel link setting accepts a JavaScript URL or HTML event-handler payload and renders the saved value in visitor-facing widget markup without sanitization or output escaping. Administrator-level access is required, and the flaw matters when unfiltered HTML is disabled, including WordPress multisite deployments; opening the affected page or clicking the generated link runs the stored script in that visitor's browser.

The record

CVE
CVE-2023-3245
Published
Jul 17, 2023
Updated
Apr 23, 2025
Vendor
Premio
Product
Chaty
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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=0 <3.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Premio · Chatyversion=0 <3.1.2

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.4WordfenceCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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