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OpenCart CVE-2026-84438

| EUVDEUVD-2026-69801 LOW
Cross-site Scripting (XSS) (CWE-79)
2026-09-02 cna@vuldb.com GHSA-9j6j-43p2-38v2
XSS PHP
2.0
CVSS 4.0 · Vendor: vuldb

Severity by source

Vendor (vuldb) PRIMARY
2.0 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
3.5 LOW

Requires authenticated customer account (PR:L) and admin interaction with autocomplete (UI:R); impact is integrity-only with no scope change.

3.1 AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (vuldb).

CVSS VectorVendor: vuldb

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

2
Analysis Generated
Sep 02, 2026 - 02:31 vuln.today
CVE Published
Sep 02, 2026 - 02:17 cve.org
LOW 2.0

DescriptionCVE.org

A vulnerability was determined in OpenCart 4.1.0.3/4.1.0.4. This affects an unknown function of the file catalog/controller/account/edit.php of the component Autocomplete Workflow. This manipulation of the argument firstname causes cross site scripting. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Stored cross-site scripting in OpenCart 4.1.0.3 and 4.1.0.4 allows an authenticated customer to inject malicious script content via the firstname field in catalog/controller/account/edit.php, which executes in the browser of any user (likely an admin or staff member) who triggers the Autocomplete Workflow over customer data. A public proof-of-concept is available on GitHub. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Attacker must possess or be able to create a low-privilege customer account on the target OpenCart store (PR:L). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 base score of 2.0 accurately reflects the constrained nature of this vulnerability: exploitation requires a valid customer account (PR:L), victim interaction (UI:P), and produces only low integrity impact with no confidentiality or availability consequences. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch is available at the time of analysis - the vendor did not respond to disclosure. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-84438 vulnerability details – vuln.today
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