EUVD-2026-64059
GHSA-j3q5-h4vg-3pfp
Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/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
Description explicitly requires authentication (PR:L overrides supplied PR:N); address data exposure adds C:L; cart manipulation adds I:L; no availability impact.
Primary rating from Vendor (Joomla).
CVSS VectorVendor: Joomla
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/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
Lifecycle Timeline
1DescriptionCVE.org
Joomla Extension - j2commerce.com - Cross-customer order replication in J2Store 1.0.0-3.3.20, 4.0.0-4.0.20, 4.1.0-4.1.5 - An authenticated user could supply another customer's order_id to copy their cart contents and address data into the attacker's session. The CSRF token was validated but ownership was not checked.
AnalysisAI
Cross-customer order replication in J2Store (Joomla extension by j2commerce.com, versions 1.0.0-3.3.20, 4.0.0-4.0.20, and 4.1.0-4.1.5) allows an authenticated attacker to supply an arbitrary order_id and copy another customer's cart contents and shipping address data directly into the attacker's own session. The root cause is absent ownership validation on the order copy function - CSRF tokens are checked, preventing cross-site request forgery, but the back-end never verifies that the order_id belongs to the requesting user. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold a valid authenticated account on the J2Store-powered Joomla site - unauthenticated exploitation is ruled out by the description and is inconsistent with the application flow. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is moderate and bounded. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with a valid J2Store account on the target Joomla site logs in and submits a POST request to the order-copy endpoint, substituting a guessed or enumerated victim order_id in place of their own. Because no ownership check is performed, the server populates the attacker's session with the victim's cart items and shipping address. … |
| Remediation | No specific patched version was identified in the available intelligence; the only vendor reference provided is the homepage https://www.j2commerce.com/, which should be monitored for an advisory or updated release notes. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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