Vulnerability · Published Apr 1, 2026 · Assigned by Joomla
CVE-2026-23898Joomla! Core - [20260305] - Arbitrary file deletion in com_joomlaupdate
High 8.6
In plain English
A high-severity security flaw in Joomla! CMS from Joomla! Project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Severity (CVSS 4.0)8.6High
Exploit odds (30 days)0.5%top 59.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Lack of input validation leads to an arbitrary file deletion vulnerability in the autoupdate server mechanism.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Joomla! Project | Joomla! CMS | 4.0.0-5.4.36.0.0-6.0.3 |
Weakness: CWE-73 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N