CVE-2023-5348Public exploitNetwork attack vector

Stored XSS via unauthorized settings update

Published Dec 18, 2023 · Updated Aug 2, 2024

Stored XSS in MultiVendorX CatalogX before 5.0.3 allows remote attackers to inject script through an unauthenticated settings request. The mvx_catalog/v1/save_enquiry REST route accepts a JSON model without authorization and stores an unescaped custom_hover_background_color value that is rendered on product pages. Catalog Mode must be active, and the injected script executes when a user visits an affected product page.

CVSS severity6.1
Medium
EPSS probability0.53%
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 MultiVendorX CatalogX before 5.0.3 allows remote attackers to inject script through an unauthenticated settings request. The mvx_catalog/v1/save_enquiry REST route accepts a JSON model without authorization and stores an unescaped custom_hover_background_color value that is rendered on product pages. Catalog Mode must be active, and the injected script executes when a user visits an affected product page.

The record

CVE
CVE-2023-5348
Published
Dec 18, 2023
Updated
Aug 2, 2024
Vendor
MultiVendorX
Product
CatalogX
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 18, 2023CVE 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=0 <5.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MultiVendorX · CatalogXversion=0 <5.0.3

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/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.

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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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

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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