CVE-2026-48958 — HIGH (8.8)

Q: What is CVE-2026-48958?

CVE-2026-48958 is a vulnerability with a CVSS score of 8.8 (HIGH). An improper access check allows unauthorized users to create custom fields via webservices endpoints.

Q: How severe is CVE-2026-48958?

CVE-2026-48958 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-48958?

Check the references section above for vendor advisories and patch information. Affected products include: Joomla Joomla\!.

Vulnerability Description

An improper access check allows unauthorized users to create custom fields via webservices endpoints.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Joomla	Joomla\!	>= 4.0.0, < 5.4.7

Related Weaknesses (CWE)

CWE-284

References

https://developer.joomla.org/security-centre/1066-20260712-core-incorrect-accessVendor Advisory

FAQ

What is CVE-2026-48958?

CVE-2026-48958 is a vulnerability with a CVSS score of 8.8 (HIGH). An improper access check allows unauthorized users to create custom fields via webservices endpoints.

How severe is CVE-2026-48958?

CVE-2026-48958 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-48958?

Check the references section above for vendor advisories and patch information. Affected products include: Joomla Joomla\!.