CVE-2021-33562Public exploitNetwork attack vector

Script execution via unescaped product reference

Published May 24, 2021 · Updated Aug 3, 2024

Reflected XSS in Shopizer before 2.17.0 allows remote attackers to execute script in a user's browser through a crafted product URL. Shopizer passes the ref path value from the product route into rendered output without HTML neutralization; the patch activates the XssFilter request wrapper. A user must open the crafted URL, after which the script runs under the Shopizer origin and can read or alter data available to that browser session.

CVSS severity4.8
Medium
EPSS probability2.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Shopizer before 2.17.0 allows remote attackers to execute script in a user's browser through a crafted product URL. Shopizer passes the ref path value from the product route into rendered output without HTML neutralization; the patch activates the XssFilter request wrapper. A user must open the crafted URL, after which the script runs under the Shopizer origin and can read or alter data available to that browser session.

The record

CVE
CVE-2021-33562
Published
May 24, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. May 24, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

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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