CVE-2026-34658Network attack vector

Victim-browser script execution via stored form fields

Published May 12, 2026 · Updated May 12, 2026

Stored XSS in Adobe Commerce 2.4.x allows remote authenticated users with administrative access to execute script in a victim browser. Affected releases include 2.4.9-beta1, 2.4.8-p4 and earlier, 2.4.7-p9 and earlier, 2.4.6-p14 and earlier, 2.4.5-p16 and earlier, and 2.4.4-p17 and earlier; Adobe identifies vulnerable form fields but does not disclose the field, handler, or missing encoding operation. Administrative access is required to store the payload, and a separate user must open the affected page before browser-context code executes.

CVSS severity4.8
Medium
EPSS probability0.27%
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 Adobe Commerce 2.4.x allows remote authenticated users with administrative access to execute script in a victim browser. Affected releases include 2.4.9-beta1, 2.4.8-p4 and earlier, 2.4.7-p9 and earlier, 2.4.6-p14 and earlier, 2.4.5-p16 and earlier, and 2.4.4-p17 and earlier; Adobe identifies vulnerable form fields but does not disclose the field, handler, or missing encoding operation. Administrative access is required to store the payload, and a separate user must open the affected page before browser-context code executes.

The record

CVE
CVE-2026-34658
Published
May 12, 2026
Updated
May 12, 2026
Vendor
Adobe
Product
Adobe Commerce
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 12, 2026CVE publishedPublication date reported by the CVE source.
  2. May 12, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.4.4-p17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Adobe · Adobe Commerceversion=0 <=2.4.4-p17

Published CVSS scores

4.8AdobeCVSS: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 exploitUnconfirmed

Weakness, pattern, technique

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

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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