CVE-2026-48904 - Vulnerability Details - OpenCVE

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products

References

Link	Providers
https://developer.joomla.org/security-centre/1046-20260514-core-privilege-escalation-through-com-users-webservice-endpoints.html

History

Tue, 26 May 2026 18:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 26 May 2026 17:00:00 +0000

Type	Values Removed	Values Added
Description		An improper access check allows privelege escalation through the com_users group editing webservice endpoint.
Title		Joomla! Core - [20260514] - Privilege escalation through com_users webservice endpoints
Weaknesses		CWE-284
References		https://developer.joomla.org/security-centre/1046-20260514-core-privilege-escalation-through-com-users-webservice-endpoints.html
Metrics		cvssV4_0 `{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}`

MITRE

Status: PUBLISHED

Assigner: Joomla

Published: 2026-05-26T16:43:08.503Z

Updated: 2026-05-26T17:26:34.440Z

Reserved: 2026-05-26T10:06:17.656Z

Link: CVE-2026-48904

Vulnrichment

Updated: 2026-05-26T17:26:30.739Z

NVD

Status : Undergoing Analysis

Published: 2026-05-26T17:16:55.203

Modified: 2026-05-26T19:06:58.447

Link: CVE-2026-48904

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-05-26T18:45:13Z

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-48904", "assignerOrgId": "6ff30186-7fb7-4ad9-be33-533e7b05e586", "state": "PUBLISHED", "assignerShortName": "Joomla", "dateReserved": "2026-05-26T10:06:17.656Z", "datePublished": "2026-05-26T16:43:08.503Z", "dateUpdated": "2026-05-26T17:26:34.440Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Joomla! CMS", "vendor": "Joomla! Project", "versions": [{"status": "affected", "version": "4.0.0-5.4.5"}, {"status": "affected", "version": "6.0.0-6.1.0"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Christos Papakonstantinou, Cantina"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "An improper access check allows privelege escalation through the com_users group editing webservice endpoint."}], "value": "An improper access check allows privelege escalation through the com_users group editing webservice endpoint."}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.2, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "impacts": [{"capecId": "CAPEC-1", "descriptions": [{"lang": "en", "value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-284", "description": "CWE-284 Improper Access Control", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6ff30186-7fb7-4ad9-be33-533e7b05e586", "shortName": "Joomla", "dateUpdated": "2026-05-26T16:43:08.503Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://developer.joomla.org/security-centre/1046-20260514-core-privilege-escalation-through-com-users-webservice-endpoints.html"}], "source": {"discovery": "UNKNOWN"}, "title": "Joomla! Core - [20260514] - Privilege escalation through com_users webservice endpoints", "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-26T17:26:26.046489Z", "id": "CVE-2026-48904", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-26T17:26:34.440Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-48904", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-05-26T17:26:26.046489Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-26T17:26:30.739Z"}}], "cna": {"title": "Joomla! Core - [20260514] - Privilege escalation through com_users webservice endpoints", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "finder", "value": "Christos Papakonstantinou, Cantina"}], "impacts": [{"capecId": "CAPEC-1", "descriptions": [{"lang": "en", "value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.2, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Joomla! Project", "product": "Joomla! CMS", "versions": [{"status": "affected", "version": "4.0.0-5.4.5"}, {"status": "affected", "version": "6.0.0-6.1.0"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://developer.joomla.org/security-centre/1046-20260514-core-privilege-escalation-through-com-users-webservice-endpoints.html", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "Vulnogram 0.1.0-dev"}, "descriptions": [{"lang": "en", "value": "An improper access check allows privelege escalation through the com_users group editing webservice endpoint.", "supportingMedia": [{"type": "text/html", "value": "An improper access check allows privelege escalation through the com_users group editing webservice endpoint.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-284", "description": "CWE-284 Improper Access Control"}]}], "providerMetadata": {"orgId": "6ff30186-7fb7-4ad9-be33-533e7b05e586", "shortName": "Joomla", "dateUpdated": "2026-05-26T16:43:08.503Z"}}}, "cveMetadata": {"cveId": "CVE-2026-48904", "state": "PUBLISHED", "dateUpdated": "2026-05-26T17:26:34.440Z", "dateReserved": "2026-05-26T10:06:17.656Z", "assignerOrgId": "6ff30186-7fb7-4ad9-be33-533e7b05e586", "datePublished": "2026-05-26T16:43:08.503Z", "assignerShortName": "Joomla"}, "dataVersion": "5.2"}