SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-48904

An improper access check allows privelege escalation through the com_users group editing webservice endpoint.

HIGH 8.2EPSS 4.58%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (4.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

An improper access check allows privelege escalation through the com_users group editing webservice endpoint.

CVSS 4.0
8.2 HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS
4.58% probability · 92th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-284
Affected
joomla/joomla\!
Source
security@joomla.org
EPSS trend
0%3%5%25 October 2026: 4.58%26 October 2026: 4.58%25 October 202626 October 2026

EPSS moved from 4.6% on 25 October 2026 to 4.6% on 26 October 2026.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.