CVE-2026-74252

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 65% 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
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.6Exploit: 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 - Stored XSS in Guest checkout in J2Store 1.0.0-3.3.20, 4.0.0-4.0.20, 4.1.0-4.1.5 - J2Commerce 4.1.5 is vulnerable to Stored Cross-Site Scripting (XSS) through the guest checkout billing address fields. An unauthenticated attacker exploits a filter bypass in Joomla's Input::getArray() combined with PHP's variables_order=EGPCS (Cookie overrides POST in $_REQUEST ) to store unsanitized HTML in fields such as billing_first_name.

CVSS v3
8.6
EG Score
8.6(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity86% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

August 21, 2026

Last Modified

August 26, 2026

Advisory Details (1)

Auto-updated Aug 21, 2026
No patch confirmed yet.
generic

Powerful and intuitive Joomla eCommerce. - J2Commerce

https://www.j2commerce.com/

Vendor Advisories for CVE-2026-74252(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 26× in last 7d / 33× 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. 2026-08-30 03:36 UTCEG score recompute
  2. 2026-08-30 03:36 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-29 14:23 UTCGHSA enrichment
  5. 2026-08-29 01:07 UTCEG score recompute
  6. 2026-08-29 01:07 UTCGHSA enrichment
  7. 2026-08-28 21:42 UTCEPSS rescore
  8. 2026-08-28 08:36 UTCGHSA enrichment
  9. 2026-08-27 19:24 UTCEG score recompute
  10. 2026-08-27 19:24 UTCGHSA enrichment
  11. 2026-08-27 14:25 UTCEPSS rescore
  12. 2026-08-27 06:09 UTCGHSA enrichment
  13. 2026-08-26 16:46 UTCEG score recompute
  14. 2026-08-26 16:46 UTCGHSA enrichment
  15. 2026-08-26 14:47 UTCEPSS rescore
  16. 2026-08-26 07:09 UTCGHSA enrichment
  17. 2026-08-25 17:56 UTCEG score recompute
  18. 2026-08-25 17:56 UTCGHSA enrichment
  19. 2026-08-25 13:49 UTCEPSS rescore
  20. 2026-08-25 04:44 UTCGHSA enrichment
  21. 2026-08-24 15:32 UTCEG score recompute
  22. 2026-08-24 15:31 UTCGHSA enrichment
  23. 2026-08-24 14:18 UTCEPSS rescore
  24. 2026-08-24 02:19 UTCGHSA enrichment
  25. 2026-08-23 13:05 UTCEG score recompute
Show 8 more
  1. 2026-08-23 13:04 UTCGHSA enrichment
  2. 2026-08-23 00:19 UTCEPSS rescore
  3. 2026-08-22 23:49 UTCGHSA enrichment
  4. 2026-08-22 10:37 UTCGHSA enrichment
  5. 2026-08-21 21:24 UTCEG score recompute
  6. 2026-08-21 20:19 UTCEG score recompute
  7. 2026-08-21 19:34 UTCEG score recompute
  8. 2026-08-21 19:34 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-74252?
CVE-2026-74252 is a high vulnerability published on August 21, 2026. Joomla Extension - j2commerce.com - Stored XSS in Guest checkout in J2Store 1.0.0-3.3.20, 4.0.0-4.0.20, 4.1.0-4.1.5 - J2Commerce 4.1.5 is vulnerable to Stored Cross-Site Scripting (XSS) through the guest checkout billing address fields. An unauthenticated attacker exploits a filter bypass in…
When was CVE-2026-74252 disclosed?
CVE-2026-74252 was first published in the National Vulnerability Database on August 21, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74252 actively exploited?
CVE-2026-74252 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 65.5% of all scored CVEs.
What is the CVSS score of CVE-2026-74252?
CVE-2026-74252 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-74252?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74252, 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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