CVE-2025-9084 - Vulnerability Details - OpenCVE

Mattermost versions 10.5.x <= 10.5.9 fail to properly validate redirect URLs which allows attackers to redirect users to malicious sites via crafted OAuth login URLs

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Mattermost	Mattermost Mattermost Server

Configuration 1 [-]

cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*

No data.

References

Link	Providers
https://mattermost.com/security-updates

History

Wed, 17 Sep 2025 11:00:00 +0000

Type	Values Removed	Values Added
First Time appeared		Mattermost mattermost
Vendors & Products		Mattermost mattermost

Tue, 16 Sep 2025 16:00:00 +0000

Type	Values Removed	Values Added
First Time appeared		Mattermost Mattermost mattermost Server
CPEs		cpe:2.3:a:mattermost:mattermost_server::::::::
Vendors & Products		Mattermost Mattermost mattermost Server

Mon, 15 Sep 2025 13:15:00 +0000

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

Mon, 15 Sep 2025 10:45:00 +0000

Type	Values Removed	Values Added
Description		Mattermost versions 10.5.x <= 10.5.9 fail to properly validate redirect URLs which allows attackers to redirect users to malicious sites via crafted OAuth login URLs
Title		Open redirect in OAuth login
Weaknesses		CWE-601
References		https://mattermost.com/security-updates
Metrics		cvssV3_1 `{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N'}`

MITRE

Status: PUBLISHED

Assigner: Mattermost

Published: 2025-09-15T10:22:30.184Z

Updated: 2025-09-15T12:24:41.138Z

Reserved: 2025-08-15T16:15:40.630Z

Link: CVE-2025-9084

Vulnrichment

Updated: 2025-09-15T12:24:36.604Z

NVD

Status : Analyzed

Published: 2025-09-15T11:15:34.350

Modified: 2025-09-16T15:59:24.377

Link: CVE-2025-9084

Redhat

No data.

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-9084", "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "state": "PUBLISHED", "assignerShortName": "Mattermost", "dateReserved": "2025-08-15T16:15:40.630Z", "datePublished": "2025-09-15T10:22:30.184Z", "dateUpdated": "2025-09-15T12:24:41.138Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Mattermost", "vendor": "Mattermost", "versions": [{"lessThanOrEqual": "10.5.9", "status": "affected", "version": "10.5.0", "versionType": "semver"}, {"version": "10.11.0", "status": "unaffected"}, {"version": "10.5.10", "status": "unaffected"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Juho Fors\u00e9n"}], "descriptions": [{"lang": "en", "value": "Mattermost versions 10.5.x <= 10.5.9 fail to properly validate redirect URLs which allows attackers to redirect users to malicious sites via crafted OAuth login URLs"}], "metrics": [{"cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE", "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N", "baseSeverity": "LOW", "baseScore": 3.1}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "description": "CWE\u2011601: URL Redirection to Untrusted Site (\u201cOpen Redirect\u201d)", "cweId": "CWE-601"}]}], "references": [{"url": "https://mattermost.com/security-updates"}], "solutions": [{"value": "Update Mattermost to versions 10.11.0, 10.5.10 or higher.", "lang": "en"}], "source": {"advisory": "MMSA-2025-00511", "defect": ["https://mattermost.atlassian.net/browse/MM-64754"], "discovery": "{\"self\"=>\"https://mattermost.atlassian.net/rest/api/2/customFieldOption/10557\", \"value\"=>\"Internal\", \"id\"=>\"10557\"}"}, "title": "Open redirect in OAuth login", "providerMetadata": {"orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "shortName": "Mattermost", "dateUpdated": "2025-09-15T10:22:30.184Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-09-15T12:24:31.375509Z", "id": "CVE-2025-9084", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-09-15T12:24:41.138Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-9084", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-09-15T12:24:31.375509Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-09-15T12:24:36.604Z"}}], "cna": {"title": "Open redirect in OAuth login", "source": {"defect": ["https://mattermost.atlassian.net/browse/MM-64754"], "advisory": "MMSA-2025-00511", "discovery": "{\"self\"=>\"https://mattermost.atlassian.net/rest/api/2/customFieldOption/10557\", \"value\"=>\"Internal\", \"id\"=>\"10557\"}"}, "credits": [{"lang": "en", "type": "finder", "value": "Juho Fors\u00e9n"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.1, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Mattermost", "product": "Mattermost", "versions": [{"status": "affected", "version": "10.5.0", "versionType": "semver", "lessThanOrEqual": "10.5.9"}, {"status": "unaffected", "version": "10.11.0"}, {"status": "unaffected", "version": "10.5.10"}], "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "Update Mattermost to versions 10.11.0, 10.5.10 or higher."}], "references": [{"url": "https://mattermost.com/security-updates"}], "descriptions": [{"lang": "en", "value": "Mattermost versions 10.5.x <= 10.5.9 fail to properly validate redirect URLs which allows attackers to redirect users to malicious sites via crafted OAuth login URLs"}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-601", "description": "CWE\u2011601: URL Redirection to Untrusted Site (\u201cOpen Redirect\u201d)"}]}], "providerMetadata": {"orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "shortName": "Mattermost", "dateUpdated": "2025-09-15T10:22:30.184Z"}}}, "cveMetadata": {"cveId": "CVE-2025-9084", "state": "PUBLISHED", "dateUpdated": "2025-09-15T12:24:41.138Z", "dateReserved": "2025-08-15T16:15:40.630Z", "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "datePublished": "2025-09-15T10:22:30.184Z", "assignerShortName": "Mattermost"}, "dataVersion": "5.1"}