CVE-2026-48947Network attack vector

Authenticated media overwrite via missing edit check

Published Jul 7, 2026 · Updated Jul 7, 2026

Incorrect access control in Joomla! CMS 4.1.0 through 5.4.6 and 6.0.0 through 6.1.1 allows remote authenticated users to overwrite media files. The com_media webservice endpoints authorize file replacement without requiring the editing permission that protects the target media item. Reachability requires a privileged API account; Joomla has not published the specific faulty code-level check, and the reported consequence is unauthorized file replacement.

CVSS severity6.4
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect access control in Joomla! CMS 4.1.0 through 5.4.6 and 6.0.0 through 6.1.1 allows remote authenticated users to overwrite media files. The com_media webservice endpoints authorize file replacement without requiring the editing permission that protects the target media item. Reachability requires a privileged API account; Joomla has not published the specific faulty code-level check, and the reported consequence is unauthorized file replacement.

The record

CVE
CVE-2026-48947
Published
Jul 7, 2026
Updated
Jul 7, 2026
Vendor
Joomla! Project
Product
Joomla! CMS
Classifications
CWE-284, T1565
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.1.0-5.4.6
  2. Affected versionversion=6.0.0-6.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Joomla! Project · Joomla! CMSversion=4.1.0-5.4.6; version=6.0.0-6.1.1

Published CVSS scores

4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
6.4Joomla! ProjectCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1565Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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