CVE-2026-36766Public exploitNetwork attack vector

Stored XSS via unsanitized JSON request bodies

Published Apr 30, 2026 · Updated Apr 30, 2026

Stored XSS in Shopizer 3.2.5 and earlier allows remote authenticated users to run JavaScript in another user's browser via JSON API data. XssHttpServletRequestWrapper sanitizes headers and URL parameters but leaves getInputStream() and getReader() unchanged, so @RequestBody JSON reaches storage without AntiSamy filtering. A low-privileged administrator must store a payload and a victim must view the affected resource; execution can expose the victim's session or perform actions with that victim's privileges.

CVSS severity5.4
Medium
EPSS probability0.14%
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 Shopizer 3.2.5 and earlier allows remote authenticated users to run JavaScript in another user's browser via JSON API data. XssHttpServletRequestWrapper sanitizes headers and URL parameters but leaves getInputStream() and getReader() unchanged, so @RequestBody JSON reaches storage without AntiSamy filtering. A low-privileged administrator must store a payload and a victim must view the affected resource; execution can expose the victim's session or perform actions with that victim's privileges.

The record

CVE
CVE-2026-36766
Published
Apr 30, 2026
Updated
Apr 30, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4CISA-ADPCVSS: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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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