CVE-2026-48958

HIGHNVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory published 2026-07-07. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

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

An improper access check allows unauthorized users to create custom fields via webservices endpoints.

CVSS v3
8.8
EG Score
8.8(high)
EPSS
17.6%
KEV
Not listed

Published

July 7, 2026

Last Modified

July 9, 2026

Advisory Details (1)

Auto-updated Jul 7, 2026
No patch confirmed yet.
generic

[20260712] - Core - Incorrect Access Control in com_fields webservice endpoints

https://developer.joomla.org/security-centre/1066-20260712-core-incorrect-access-control-in-com-fields-webservice-endpoints.html

Vendor Advisories for CVE-2026-48958(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 34× in last 7d / 39× 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. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 16:04 UTCEG score recompute
  3. 2026-07-15 16:04 UTCGHSA enrichment
  4. 2026-07-15 04:22 UTCEG score recompute
  5. 2026-07-15 04:21 UTCGHSA enrichment
  6. 2026-07-15 02:00 UTCEPSS rescore
  7. 2026-07-14 16:33 UTCEG score recompute
  8. 2026-07-14 16:33 UTCGHSA enrichment
  9. 2026-07-14 04:49 UTCEG score recompute
  10. 2026-07-14 04:49 UTCGHSA enrichment
  11. 2026-07-13 22:30 UTCEPSS rescore
  12. 2026-07-13 17:02 UTCEG score recompute
  13. 2026-07-13 17:02 UTCGHSA enrichment
  14. 2026-07-13 06:13 UTCEPSS rescore
  15. 2026-07-13 05:19 UTCEG score recompute
  16. 2026-07-13 05:19 UTCGHSA enrichment
  17. 2026-07-12 17:36 UTCEG score recompute
  18. 2026-07-12 17:35 UTCGHSA enrichment
  19. 2026-07-12 05:53 UTCEG score recompute
  20. 2026-07-12 05:52 UTCGHSA enrichment
  21. 2026-07-12 05:46 UTCEPSS rescore
  22. 2026-07-11 18:10 UTCEG score recompute
  23. 2026-07-11 18:10 UTCGHSA enrichment
  24. 2026-07-11 08:27 UTCEPSS rescore
  25. 2026-07-11 06:27 UTCEG score recompute
Show 14 more
  1. 2026-07-11 06:27 UTCGHSA enrichment
  2. 2026-07-10 18:45 UTCEG score recompute
  3. 2026-07-10 18:45 UTCGHSA enrichment
  4. 2026-07-10 07:03 UTCEG score recompute
  5. 2026-07-10 07:03 UTCGHSA enrichment
  6. 2026-07-09 19:18 UTCEG score recompute▲ 2.40
  7. 2026-07-09 19:18 UTCGHSA enrichment
  8. 2026-07-09 19:10 UTCEPSS rescore
  9. 2026-07-09 17:00 UTCNVD updateCVSS v3 → 8.8 · severity → HIGH
  10. 2026-07-08 18:49 UTCEG score recompute
  11. 2026-07-08 18:49 UTCGHSA enrichment
  12. 2026-07-08 15:16 UTCEPSS rescore
  13. 2026-07-07 18:19 UTCEG score recompute
  14. 2026-07-07 18:16 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-48958?
CVE-2026-48958 is a high vulnerability published on July 7, 2026. An improper access check allows unauthorized users to create custom fields via webservices endpoints.
When was CVE-2026-48958 disclosed?
CVE-2026-48958 was first published in the National Vulnerability Database on July 7, 2026, with the most recent update on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48958 actively exploited?
CVE-2026-48958 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 17.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-48958?
CVE-2026-48958 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-48958?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48958, 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-2026-48958

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