CVE-2026-78064

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 85% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
55(Track)
EG Risk 55/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

September 3, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Sep 3, 2026
No patch confirmed yet.
generic

Powerful and intuitive Joomla eCommerce. - J2Commerce

https://www.j2commerce.com/

Vendor Advisories for CVE-2026-78064(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 28× in last 7d / 69× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-21 01:42 UTCEG score recompute
  2. 2026-09-21 01:42 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 14:42 UTCGHSA enrichment
  5. 2026-09-20 03:37 UTCGHSA enrichment
  6. 2026-09-19 16:36 UTCEG score recompute
  7. 2026-09-19 16:36 UTCGHSA enrichment
  8. 2026-09-19 05:36 UTCEG score recompute
  9. 2026-09-19 05:36 UTCGHSA enrichment
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-18 18:36 UTCGHSA enrichment
  12. 2026-09-18 07:36 UTCGHSA enrichment
  13. 2026-09-17 20:36 UTCEG score recompute
  14. 2026-09-17 20:36 UTCGHSA enrichment
  15. 2026-09-17 08:25 UTCGHSA enrichment
  16. 2026-09-16 21:20 UTCEG score recompute
  17. 2026-09-16 21:20 UTCGHSA enrichment
  18. 2026-09-16 14:08 UTCEPSS rescore
  19. 2026-09-16 09:45 UTCEG score recompute
  20. 2026-09-16 09:45 UTCGHSA enrichment
  21. 2026-09-16 05:15 UTCEPSS rescore
  22. 2026-09-15 22:44 UTCGHSA enrichment
  23. 2026-09-15 11:42 UTCEG score recompute
  24. 2026-09-15 11:42 UTCGHSA enrichment
  25. 2026-09-15 03:12 UTCEPSS rescore
Show 44 more
  1. 2026-09-15 03:12 UTCEPSS rescore
  2. 2026-09-15 00:42 UTCGHSA enrichment
  3. 2026-09-14 13:42 UTCGHSA enrichment
  4. 2026-09-14 02:30 UTCEG score recompute
  5. 2026-09-14 02:30 UTCGHSA enrichment
  6. 2026-09-13 15:30 UTCGHSA enrichment
  7. 2026-09-13 04:30 UTCGHSA enrichment
  8. 2026-09-12 17:30 UTCEG score recompute
  9. 2026-09-12 17:30 UTCGHSA enrichment
  10. 2026-09-12 06:30 UTCGHSA enrichment
  11. 2026-09-11 19:30 UTCEG score recompute
  12. 2026-09-11 19:30 UTCGHSA enrichment
  13. 2026-09-11 14:53 UTCEPSS rescore
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-11 08:30 UTCGHSA enrichment
  16. 2026-09-10 21:30 UTCGHSA enrichment
  17. 2026-09-10 10:30 UTCEG score recompute
  18. 2026-09-10 10:30 UTCGHSA enrichment
  19. 2026-09-10 09:35 UTCEPSS rescore
  20. 2026-09-09 23:29 UTCGHSA enrichment
  21. 2026-09-09 10:10 UTCGHSA enrichment
  22. 2026-09-08 23:10 UTCEG score recompute
  23. 2026-09-08 23:10 UTCGHSA enrichment
  24. 2026-09-08 22:01 UTCEPSS rescore
  25. 2026-09-08 07:57 UTCGHSA enrichment
  26. 2026-09-07 20:57 UTCEG score recompute
  27. 2026-09-07 20:57 UTCGHSA enrichment
  28. 2026-09-07 09:57 UTCGHSA enrichment
  29. 2026-09-06 22:50 UTCEG score recompute
  30. 2026-09-06 22:49 UTCGHSA enrichment
  31. 2026-09-06 13:48 UTCEPSS rescore
  32. 2026-09-06 11:46 UTCGHSA enrichment
  33. 2026-09-06 00:46 UTCEG score recompute
  34. 2026-09-06 00:46 UTCGHSA enrichment
  35. 2026-09-05 13:45 UTCGHSA enrichment
  36. 2026-09-05 02:44 UTCGHSA enrichment
  37. 2026-09-04 15:43 UTCEG score recompute
  38. 2026-09-04 15:43 UTCGHSA enrichment
  39. 2026-09-04 04:42 UTCGHSA enrichment
  40. 2026-09-03 17:38 UTCGHSA enrichment
  41. 2026-09-03 13:14 UTCEG score recompute
  42. 2026-09-03 12:48 UTCEG score recompute
  43. 2026-09-03 12:01 UTCEG score recompute
  44. 2026-09-03 11:59 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78064?
CVE-2026-78064 is a high vulnerability published on September 3, 2026. 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…
When was CVE-2026-78064 disclosed?
CVE-2026-78064 was first published in the National Vulnerability Database on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78064 actively exploited?
CVE-2026-78064 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 84.7% of all scored CVEs.
What is the CVSS score of CVE-2026-78064?
CVE-2026-78064 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-78064?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78064, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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