CVE-2026-78064Network attack vectorHinoki check available

Anonymous cart tampering via inherited save task

Published Sep 3, 2026 · Updated Sep 3, 2026

Authorization bypass in J2Store 1.0.0 through 3.3.21, 4.0.0 through 4.0.21, and 4.1.0 through 4.1.6 allows remote attackers to alter cart records. The carts view's wildcard ACL exposes FOF's inherited save task, while front-end format=raw requests bypass its back-end-only CSRF check. Anonymous callers can supply user_id, session_id, or an existing row ID to create or overwrite another cart record.

CVSS severity8.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authorization bypass in J2Store 1.0.0 through 3.3.21, 4.0.0 through 4.0.21, and 4.1.0 through 4.1.6 allows remote attackers to alter cart records. The carts view's wildcard ACL exposes FOF's inherited save task, while front-end format=raw requests bypass its back-end-only CSRF check. Anonymous callers can supply user_id, session_id, or an existing row ID to create or overwrite another cart record.

The record

CVE
CVE-2026-78064
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
J2Commerce
Product
J2Store
Classifications
CWE-639, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 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=1.0.0-3.3.21
  2. Affected versionversion=4.0.0-4.0.21
  3. Affected versionversion=4.1.0-4.1.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

J2Commerce · J2Storeversion=1.0.0-3.3.21; version=4.0.0-4.0.21; version=4.1.0-4.1.6

Published CVSS scores

8.8JoomlaCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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