What is CVE-2026-48900?

CVE-2026-48900 is a medium-severity vulnerability in Joomla Joomla\!, classified under Improper Access Control. CVSS score: 4.3/10. Published 2026-05-26.

How severe is CVE-2026-48900?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Joomla Joomla\!

CVE-2026-48900

An improper access check allowed low privileged users to edit the task types of existing scheduler tasks.

Published 2026-05-26 · last modified 2026-07-24.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (15.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Joomla Joomla\!
Joomla! Project Cms — versions 4.1.0-5.4.5, 6.0.0-6.1.0

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

developer.joomla.org/security-centre/1048-20260516-core-incorrect-access-contro… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-48900?: CVE-2026-48900 is a medium-severity vulnerability in Joomla Joomla\!, classified under Improper Access Control. CVSS score: 4.3/10. Published 2026-05-26.
How severe is CVE-2026-48900?: Medium severity. CVSS v3 base score is 4.3 out of 10.