Administrator script execution via decoded customer names
Published Sep 2, 2026 · Updated Sep 2, 2026
Stored cross-site scripting in OpenCart 4.1.0.3 and 4.1.0.4 allows remote authenticated users to execute script in an administrator browser. The account edit controller stores attacker-controlled firstname data, and backend autocomplete code decodes the value before inserting it with HTML-rendering methods. A customer account and an administrator selecting the crafted customer in an order or return workflow are required, exposing the administrator session and permitted actions.
Summary
What happened
Stored cross-site scripting in OpenCart 4.1.0.3 and 4.1.0.4 allows remote authenticated users to execute script in an administrator browser. The account edit controller stores attacker-controlled firstname data, and backend autocomplete code decodes the value before inserting it with HTML-rendering methods. A customer account and an administrator selecting the crafted customer in an order or return workflow are required, exposing the administrator session and permitted actions.
The record
- CVE
- CVE-2026-84438
- Published
- Sep 2, 2026
- Updated
- Sep 2, 2026
- Vendor
- OpenCart
- Product
- OpenCart
- Classifications
- CWE-79, CWE-94, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 2, 2026CVE publishedPublication date reported by the CVE source.
- Sep 2, 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.
- Affected versionversion=4.1.0.3
- Affected versionversion=4.1.0.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- Stored XSS via Customer Name proof of conceptproof of concept · demonstrated
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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