CVE-2026-88853

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 67% 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
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

Joomla Extension - regularlabs.com - Privileged stored XSS via event handler option in Modals Pro extension for Joomla < 17.0.0 - Modals Pro intentionally supports JavaScript Events such as on-open and on-closed. Affected versions do not distinguish trusted extension configuration from event code supplied in ordinary article content. A lower-privileged author can therefore use a documented executable feature which should be reserved for trusted authors.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

September 14, 2026

Last Modified

September 16, 2026

Advisory Details (1)

Auto-updated Sep 14, 2026
No patch confirmed yet.
generic

Regular Labs - Extensions for Joomla! - Regular Labs

https://www.regularlabs.com/

Vendor Advisories for CVE-2026-88853(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 27× in last 7d / 51× 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. 2026-09-25 03:17 UTCGHSA enrichment
  2. 2026-09-24 15:35 UTCEG score recompute
  3. 2026-09-24 15:35 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 03:53 UTCEG score recompute
  6. 2026-09-24 03:53 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 16:01 UTCGHSA enrichment
  9. 2026-09-23 04:16 UTCGHSA enrichment
  10. 2026-09-22 16:34 UTCEG score recompute
  11. 2026-09-22 16:34 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 04:53 UTCEG score recompute
  14. 2026-09-22 04:52 UTCGHSA enrichment
  15. 2026-09-21 21:09 UTCEPSS rescore
  16. 2026-09-21 17:10 UTCGHSA enrichment
  17. 2026-09-21 05:28 UTCEG score recompute
  18. 2026-09-21 05:28 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-20 17:45 UTCGHSA enrichment
  21. 2026-09-20 06:03 UTCGHSA enrichment
  22. 2026-09-19 18:21 UTCEG score recompute
  23. 2026-09-19 18:21 UTCGHSA enrichment
  24. 2026-09-19 06:39 UTCEG score recompute
  25. 2026-09-19 06:39 UTCGHSA enrichment
Show 26 more
  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 18:58 UTCGHSA enrichment
  3. 2026-09-18 07:16 UTCGHSA enrichment
  4. 2026-09-17 19:34 UTCEG score recompute
  5. 2026-09-17 19:34 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 07:21 UTCGHSA enrichment
  8. 2026-09-16 19:37 UTCEG score recompute
  9. 2026-09-16 19:37 UTCGHSA enrichment
  10. 2026-09-16 16:05 UTCEG score recompute
  11. 2026-09-16 16:05 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-16 04:23 UTCGHSA enrichment
  15. 2026-09-15 16:36 UTCGHSA enrichment
  16. 2026-09-15 04:53 UTCEG score recompute
  17. 2026-09-15 04:53 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:04 UTCGHSA enrichment
  20. 2026-09-14 15:22 UTCEG score recompute
  21. 2026-09-14 15:22 UTCGHSA enrichment
  22. 2026-09-14 14:59 UTCEG score recompute
  23. 2026-09-14 14:59 UTCGHSA enrichment
  24. 2026-09-14 07:21 UTCEG score recompute
  25. 2026-09-14 06:20 UTCEG score recompute
  26. 2026-09-14 06:19 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-88853?
CVE-2026-88853 is a high vulnerability published on September 14, 2026. Joomla Extension - regularlabs.com - Privileged stored XSS via event handler option in Modals Pro extension for Joomla < 17.0.0 - Modals Pro intentionally supports JavaScript Events such as on-open and on-closed. Affected versions do not distinguish trusted extension configuration from event code…
When was CVE-2026-88853 disclosed?
CVE-2026-88853 was first published in the National Vulnerability Database on September 14, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-88853 actively exploited?
CVE-2026-88853 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 66.7% of all scored CVEs.
What is the CVSS score of CVE-2026-88853?
CVE-2026-88853 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-88853?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-88853, 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

Explore the affected products and dependency analysis for CVE-2026-88853

Explore →

Is Your Infrastructure Affected by CVE-2026-88853?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs