CVE-2021-21023Network attack vector

Admin-browser script execution via stored cross-site scripting

Published Feb 11, 2021 · Updated Sep 17, 2024

Stored XSS in the admin console of Adobe Commerce 2.4.1 and earlier allows remote authenticated users to execute JavaScript in a victim's browser. Adobe has not published the affected input field, rendering path, or missing output-neutralization operation. Administrative access is required to store the payload, and execution occurs when a victim views the affected admin-console content.

CVSS severity4.8
Medium
EPSS probability1.61%
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 the admin console of Adobe Commerce 2.4.1 and earlier allows remote authenticated users to execute JavaScript in a victim's browser. Adobe has not published the affected input field, rendering path, or missing output-neutralization operation. Administrative access is required to store the payload, and execution occurs when a victim views the affected admin-console content.

The record

CVE
CVE-2021-21023
Published
Feb 11, 2021
Updated
Sep 17, 2024
Vendor
Adobe
Product
Adobe Commerce
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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 <=2.3.6
  2. Affected versionversion=unspecified <=2.4.0-p1
  3. Affected versionversion=unspecified <=2.4.1
  4. Affected versionversion=unspecified <=None

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Adobe · Adobe Commerceversion=unspecified <=2.3.6; version=unspecified <=2.4.0-p1; version=unspecified <=2.4.1; version=unspecified <=None

Published CVSS scores

4.8Adobe Systems IncorporatedCVSS:3.0/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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