CVE-2026-100751

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.3% (21st percentile of EPSS-scored CVEs). 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: cna:joomla, epss
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.5Exploit: None knownExposed services: Not assessed

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

Joomla Extension - regularlabs.com - Privileged stored XSS via data-rlta-url attributes in Tabs & Accordions (Pro) 2.3.0 - 3.1.0 - Tabs & Accordions Pro accepts a url option for an item and writes it to a generated data-rlta-url attribute. The browser code passes that value to window.open() when the item is activated. Affected versions do not reject browser URL schemes which execute JavaScript. Joomla sees ordinary plugin syntax while filtering the authored article; Tabs & Accordions creates the executable browser behavior later while rendering the article.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100CISA SSVC

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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
21st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 28, 2026

Last Modified

September 30, 2026

Advisory Details (1)

Auto-updated Sep 28, 2026
No patch confirmed yet.
generic

Regular Labs - Extensions for Joomla! - Regular Labs

https://www.regularlabs.com/

Vendor Advisories for CVE-2026-100751(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 32× in last 7d / 32× 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. 2026-10-04 07:55 UTCGHSA enrichment
  2. 2026-10-03 19:19 UTCEG score recompute
  3. 2026-10-03 19:19 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-03 06:46 UTCGHSA enrichment
  6. 2026-10-02 18:12 UTCEG score recompute
  7. 2026-10-02 18:12 UTCGHSA enrichment
  8. 2026-10-02 05:36 UTCEG score recompute
  9. 2026-10-02 05:36 UTCGHSA enrichment
  10. 2026-10-01 19:49 UTCEPSS rescore
  11. 2026-10-01 17:00 UTCGHSA enrichment
  12. 2026-10-01 04:03 UTCGHSA enrichment
  13. 2026-09-30 15:30 UTCEG score recompute
  14. 2026-09-30 15:30 UTCGHSA enrichment
  15. 2026-09-30 15:02 UTCEPSS rescore
  16. 2026-09-30 14:53 UTCEG score recompute
  17. 2026-09-30 14:53 UTCGHSA enrichment
  18. 2026-09-30 12:22 UTCEG score recompute
  19. 2026-09-30 12:21 UTCGHSA enrichment
  20. 2026-09-30 11:48 UTCEG score recompute
  21. 2026-09-30 11:48 UTCGHSA enrichment
  22. 2026-09-30 10:48 UTCGHSA enrichment
  23. 2026-09-29 22:12 UTCEG score recompute
  24. 2026-09-29 22:12 UTCGHSA enrichment
  25. 2026-09-29 15:20 UTCEPSS rescore
Show 7 more
  1. 2026-09-29 08:25 UTCEG score recompute
  2. 2026-09-29 08:25 UTCGHSA enrichment
  3. 2026-09-28 19:51 UTCEG score recompute
  4. 2026-09-28 19:51 UTCGHSA enrichment
  5. 2026-09-28 13:50 UTCEPSS rescore
  6. 2026-09-28 07:18 UTCEG score recompute
  7. 2026-09-28 07:17 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-100751?
CVE-2026-100751 is a high vulnerability published on September 28, 2026. Joomla Extension - regularlabs.com - Privileged stored XSS via data-rlta-url attributes in Tabs & Accordions (Pro) 2.3.0 - 3.1.0 - Tabs & Accordions Pro accepts a url option for an item and writes it to a generated data-rlta-url attribute. The browser code passes that value to window.open() when…
When was CVE-2026-100751 disclosed?
CVE-2026-100751 was first published on September 28, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100751 actively exploited?
CVE-2026-100751 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (21st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100751?
CVE-2026-100751 has a CVSS base score of 7.5 (the CNA's own assessment, by joomla; NVD's own analysis pending).
How do I remediate CVE-2026-100751?
No fix for CVE-2026-100751 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-100751 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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