cbcvebase.
CVE-2026-48958
published 2026-07-07

CVE-2026-48958: An improper access check allows unauthorized users to create custom fields via webservices endpoints.

PriorityP354high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.46%
39.2th percentile
An improper access check allows unauthorized users to create custom fields via webservices endpoints.

Affected

4 ranges
VendorProductVersion rangeFixed in
joomla!_projectjoomla!_cms——
joomla!_projectjoomla!_cms——
joomlajoomla_!>= 4.0.0 < 5.4.75.4.7
joomlajoomla_!>= 6.0.0 < 6.1.26.1.2

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv4.06.4MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.