Joomla Extension - j2commerce.com - Anonymous cart-record tampering via inherited FOF `save` task in J2Store 1.0.0-3.3.21, 4.0.0-4.0.21, 4.1.0-4.1.6 - `fof.xml` grants the `carts` view's tasks a wildcard `true` ACL, and FOF only enforces CSRF tokens on back-end HTML requests, not on front-end `format=raw` requests. `J2StoreControllerCarts` already scoped `remove()` to the caller's own session, but never overrode the generic FOF `save` task, so it remained reachable to insert new cart rows with an attacker-chosen `user_id`/`session_id`, or overwrite an existing row by id.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
j2commerce.com J2Store extension for Joomla unaffected
Version Status Constraints
1.0.0-3.3.21 affected —
4.0.0-4.0.21 affected —
4.1.0-4.1.6 affected —

No data.

No data.

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Vendors Products
J2commerce.com Subscribe
J2store Extension For Joomla Subscribe

Project Subscriptions

Vendors Products
J2commerce.com Subscribe
J2store Extension For Joomla Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.j2commerce.com/ cve-icon cve-icon
History

Thu, 03 Sep 2026 14:00:00 +0000

Type Values Removed Values Added
First Time appeared J2commerce.com
J2commerce.com j2store Extension For Joomla
Vendors & Products J2commerce.com
J2commerce.com j2store Extension For Joomla

Thu, 03 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 03 Sep 2026 12:00:00 +0000

Type Values Removed Values Added
Description Joomla Extension - j2commerce.com - Anonymous cart-record tampering via inherited FOF `save` task in J2Store 1.0.0-3.3.21, 4.0.0-4.0.21, 4.1.0-4.1.6 - `fof.xml` grants the `carts` view's tasks a wildcard `true` ACL, and FOF only enforces CSRF tokens on back-end HTML requests, not on front-end `format=raw` requests. `J2StoreControllerCarts` already scoped `remove()` to the caller's own session, but never overrode the generic FOF `save` task, so it remained reachable to insert new cart rows with an attacker-chosen `user_id`/`session_id`, or overwrite an existing row by id.
Title Joomla Extension - j2commerce.com - Anonymous cart-record tampering via inherited FOF `save` task in J2Store 1.0.0-3.3.21, 4.0.0-4.0.21, 4.1.0-4.1.6
Weaknesses CWE-639
References
Metrics cvssV4_0

{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Joomla

Published:

Updated: 2026-09-03T12:36:17.415Z

Reserved: 2026-08-22T11:33:08.526Z

Link: CVE-2026-78064

cve-icon Vulnrichment

Updated: 2026-09-03T12:26:16.399Z

cve-icon NVD

Status : Received

Published: 2026-09-03T13:06:09.060

Modified: 2026-09-03T13:06:09.060

Link: CVE-2026-78064

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-03T13:45:04Z

Weaknesses