CVE-2026-84437Public exploitNetwork attack vectorHinoki check available

Browser script execution via unescaped address autocomplete

Published Sep 2, 2026 · Updated Sep 3, 2026

Stored cross-site scripting in OpenCart 4.1.0.3 and 4.1.0.4 allows remote authenticated users to inject script through address_1. The account address workflow stores address_1 and later inserts it into autocomplete output without neutralizing browser-active markup. Exploitation requires a customer account and victim interaction; successful payloads execute in the victim's browser and can alter displayed content or actions.

CVSS severity5.1
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored cross-site scripting in OpenCart 4.1.0.3 and 4.1.0.4 allows remote authenticated users to inject script through address_1. The account address workflow stores address_1 and later inserts it into autocomplete output without neutralizing browser-active markup. Exploitation requires a customer account and victim interaction; successful payloads execute in the victim's browser and can alter displayed content or actions.

The record

CVE
CVE-2026-84437
Published
Sep 2, 2026
Updated
Sep 3, 2026
Vendor
OpenCart
Product
OpenCart
Classifications
CWE-79, CWE-94, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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=4.1.0.3
  2. Affected versionversion=4.1.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenCart · OpenCartversion=4.1.0.3; version=4.1.0.4

Published CVSS scores

5.1NVDCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
4.0NVDAV:N/AC:L/Au:S/C:N/I:P/A:N
3.5NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.007JavaScript/JScript

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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