What is CVE-2026-48947?

CVE-2026-48947 is a medium-severity vulnerability in Joomla Joomla\!, classified under Improper Access Control. CVSS score: 4.9/10. Published 2026-07-07.

How severe is CVE-2026-48947?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Vulnerability in Joomla Joomla\!

CVE-2026-48947

An improper access check allows privileged users to overwrite media files without editing permissions.

Published 2026-07-07 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (24.3th percentile), scored 2026-10-08.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Joomla Joomla\!
Joomla! Project Cms — versions 4.1.0-5.4.6, 6.0.0-6.1.1

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

developer.joomla.org/security-centre/1055-20260701-core-incorrect-access-contro… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-48947?: CVE-2026-48947 is a medium-severity vulnerability in Joomla Joomla\!, classified under Improper Access Control. CVSS score: 4.9/10. Published 2026-07-07.
How severe is CVE-2026-48947?: Medium severity. CVSS v3 base score is 4.9 out of 10.