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PatchSiren cyber security CVE debrief

CVE-2026-48947 Joomla! Project CVE debrief

CVE-2026-48947 is a medium-severity vulnerability allowing privileged users to overwrite media files without editing permissions. The CVE record was published on 2026-07-07T19:16:52.607Z and has not been modified since then. This improper access control vulnerability, reported in Joomla, has a CVSS score of 6.4. Affected administrators and users with privileged access to media management systems should assess and mitigate this vulnerability. The vulnerability allows attackers to overwrite media files without having the necessary editing permissions, potentially impacting data integrity. Further investigation and verification are necessary to fully understand the scope and impact of CVE-2026-48947.

Vendor
Joomla! Project
Product
Joomla! CMS
CVSS
MEDIUM 6.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-07
Original CVE updated
2026-07-07
Advisory published
2026-07-07
Advisory updated
2026-07-07

Who should care

Administrators and users with privileged access to media management systems, as well as security teams and vulnerability management teams, should assess and mitigate this vulnerability. This includes reviewing and restricting privileged user access to media management systems, implementing strict access controls to prevent unauthorized media file modifications, and monitoring media file changes for suspicious activity.

Technical summary

CVE-2026-48947 is an improper access control vulnerability that allows privileged users to overwrite media files without having the necessary editing permissions. This issue was reported in Joomla and has been assigned a CVSS score of 6.4, indicating a medium severity level. The vulnerability is characterized by the following CVSS vector: CVSS: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.

Defensive priority

Medium priority due to the potential for data integrity impact.

Recommended defensive actions

  • Review and restrict privileged user access to media management systems.
  • Implement strict access controls to prevent unauthorized media file modifications.
  • Monitor media file changes for suspicious activity.
  • Apply vendor patches or updates as soon as available.

Evidence notes

The CVE record and NVD detail provide limited information about the vulnerability. Further investigation and verification are necessary to fully understand the scope and impact of CVE-2026-48947.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-07T19:16:52.607Z and has not been modified since then.