What is CVE-2026-23898?

CVE-2026-23898 is a high-severity vulnerability in Joomla Joomla\!, classified under External Control of File Name or Path. CVSS score: 7.2/10. Published 2026-04-01.

How severe is CVE-2026-23898?

High severity. CVSS v3 base score is 7.2 out of 10.

Vulnerability in Joomla Joomla\!

CVE-2026-23898

Lack of input validation leads to an arbitrary file deletion vulnerability in the autoupdate server mechanism.

Published 2026-04-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (37.1th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Joomla Joomla\!
Joomla! Project Cms — versions 4.0.0-5.4.3, 6.0.0-6.0.3

Weakness classification (CWE)

CWE-73 — External Control of File Name or Path

References

developer.joomla.org/security-centre/1031-20260305-core-arbitrary-file-deletion… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-23898?: CVE-2026-23898 is a high-severity vulnerability in Joomla Joomla\!, classified under External Control of File Name or Path. CVSS score: 7.2/10. Published 2026-04-01.
How severe is CVE-2026-23898?: High severity. CVSS v3 base score is 7.2 out of 10.