CVE-2023-5333

Denial of Service via multiple identical User IDs in /api/v4/users/ids

View on CVE.org

Published Oct 9, 2023 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Description

Mattermost fails to deduplicate input IDs allowing a simple user to cause the application to consume excessive resources and possibly crash by sending a specially crafted request to /api/v4/users/ids with multiple identical IDs.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Mattermost

Mattermost

unaffected

Version	Status	Constraints
`0`	affected	≤ 7.8.10
`0`	affected	≤ 8.0.2
`0`	affected	≤ 8.1.1
`7.8.11`	unaffected	—
`8.0.3`	unaffected	—
`8.1.2`	unaffected	—

Configuration 1 [-]

OR	cpe:2.3:a:mattermost:mattermost_server::::::::
	cpe:2.3:a:mattermost:mattermost_server::::::::
	cpe:2.3:a:mattermost:mattermost_server::::::::

No data.

No data available yet.

Remediation

Vendor Solution

Update Mattermost Server to versions 7.8.11, 8.0.3, 8.1.2 or higher.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2023-57650	Mattermost fails to deduplicate input IDs allowing a simple user to cause the application to consume excessive resources and possibly crash by sending a specially crafted request to /api/v4/users/ids with multiple identical IDs.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.595% probability within 30 days)

Key SSVC decision points have not yet been added.

References

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

History

No history.

Subscriptions

Mattermost Mattermost Server

Weaknesses

Sources

CVE record Updated: Sep 5, 2024, 7:46 PM

Status: PUBLISHED
Assigner: Mattermost
Published: Oct 9, 2023, 10:41 AM
Updated: Sep 5, 2024, 7:46 PM
Reserved: Oct 2, 2023, 12:25 PM

View source JSON

Vulnrichment Updated: Aug 2, 2024, 7:52 AM

Updated: Aug 2, 2024, 7:52 AM

NVD Updated: Jun 17, 2026, 6:48 AM

Status: Modified
Published: Oct 9, 2023, 11:15 AM
Modified: Jun 17, 2026, 6:48 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-5333", "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "state": "PUBLISHED", "assignerShortName": "Mattermost", "dateReserved": "2023-10-02T12:25:25.552Z", "datePublished": "2023-10-09T10:41:36.597Z", "dateUpdated": "2024-09-05T19:46:32.169Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Mattermost", "vendor": "Mattermost", "versions": [{"lessThanOrEqual": "7.8.10", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "8.0.2", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "8.1.1", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "7.8.11"}, {"status": "unaffected", "version": "8.0.3"}, {"status": "unaffected", "version": "8.1.2"}]}], "credits": [{"lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "vultza (vultza)"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Mattermost fails to deduplicate input IDs allowing a simple user to cause the application to consume excessive resources and possibly crash by sending a specially crafted request to /api/v4/users/ids with multiple identical IDs. </p>"}], "value": "Mattermost fails to deduplicate input IDs allowing a\u00a0simple user to cause the application to consume excessive resources and possibly crash by sending a specially crafted request to /api/v4/users/ids with multiple identical IDs. \n\n"}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "shortName": "Mattermost", "dateUpdated": "2023-10-09T10:41:36.597Z"}, "references": [{"url": "https://mattermost.com/security-updates"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Update Mattermost Server to versions 7.8.11, 8.0.3, 8.1.2 or higher.</p>"}], "value": "Update Mattermost Server to versions 7.8.11, 8.0.3, 8.1.2 or higher.\n\n"}], "source": {"advisory": "MMSA-2023-00239", "defect": ["https://mattermost.atlassian.net/browse/MM-54127"], "discovery": "EXTERNAL"}, "title": " Denial of Service via multiple identical User IDs in /api/v4/users/ids", "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T07:52:08.633Z"}, "title": "CVE Program Container", "references": [{"url": "https://mattermost.com/security-updates", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-09-05T19:46:22.607275Z", "id": "CVE-2023-5333", "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": "2024-09-05T19:46:32.169Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://mattermost.com/security-updates", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T07:52:08.633Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-5333", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-05T19:46:22.607275Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-05T19:46:28.819Z"}}], "cna": {"title": " Denial of Service via multiple identical User IDs in /api/v4/users/ids", "source": {"defect": ["https://mattermost.atlassian.net/browse/MM-54127"], "advisory": "MMSA-2023-00239", "discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "vultza (vultza)"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Mattermost", "product": "Mattermost", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "7.8.10"}, {"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "8.0.2"}, {"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "8.1.1"}, {"status": "unaffected", "version": "7.8.11"}, {"status": "unaffected", "version": "8.0.3"}, {"status": "unaffected", "version": "8.1.2"}], "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "Update Mattermost Server to versions 7.8.11, 8.0.3, 8.1.2 or higher.\n\n", "supportingMedia": [{"type": "text/html", "value": "<p>Update Mattermost Server to versions 7.8.11, 8.0.3, 8.1.2 or higher.</p>", "base64": false}]}], "references": [{"url": "https://mattermost.com/security-updates"}], "x_generator": {"engine": "Vulnogram 0.1.0-dev"}, "descriptions": [{"lang": "en", "value": "Mattermost fails to deduplicate input IDs allowing a\u00a0simple user to cause the application to consume excessive resources and possibly crash by sending a specially crafted request to /api/v4/users/ids with multiple identical IDs. \n\n", "supportingMedia": [{"type": "text/html", "value": "<p>Mattermost fails to deduplicate input IDs allowing a simple user to cause the application to consume excessive resources and possibly crash by sending a specially crafted request to /api/v4/users/ids with multiple identical IDs. </p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption"}]}], "providerMetadata": {"orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "shortName": "Mattermost", "dateUpdated": "2023-10-09T10:41:36.597Z"}}}, "cveMetadata": {"cveId": "CVE-2023-5333", "state": "PUBLISHED", "dateUpdated": "2024-09-05T19:46:32.169Z", "dateReserved": "2023-10-02T12:25:25.552Z", "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "datePublished": "2023-10-09T10:41:36.597Z", "assignerShortName": "Mattermost"}, "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Mattermost", "vendor": "Mattermost", "versions": [{"lessThanOrEqual": "7.8.10", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "8.0.2", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "8.1.1", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "7.8.11"}, {"status": "unaffected", "version": "8.0.3"}, {"status": "unaffected", "version": "8.1.2"}]}], "source": "responsibledisclosure@mattermost.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "714E3E9F-A35A-456F-B198-C1CBD09169C6", "versionEndExcluding": "7.8.11", "vulnerable": true}, {"criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "135D194F-2285-4EB4-9963-5BCB97F6BC6B", "versionEndExcluding": "8.0.3", "versionStartIncluding": "8.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "AC20942B-35AD-4EF5-8878-6E112865E3D5", "versionEndExcluding": "8.1.2", "versionStartIncluding": "8.1.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Mattermost fails to deduplicate input IDs allowing a\u00a0simple user to cause the application to consume excessive resources and possibly crash by sending a specially crafted request to /api/v4/users/ids with multiple identical IDs. \n\n"}, {"lang": "es", "value": "Mattermost no logra desdoblar los ID de entrada, lo que permite que un simple usuario haga que la aplicaci\u00f3n consuma recursos excesivos y posiblemente falle al enviar una solicitud especialmente manipulada a /api/v4/users/ids con m\u00faltiples ID id\u00e9nticos."}], "id": "CVE-2023-5333", "lastModified": "2026-06-17T06:48:21.883", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "responsibledisclosure@mattermost.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-5333", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-05T19:46:22.607275Z", "version": "2.0.3"}}]}, "published": "2023-10-09T11:15:11.363", "references": [{"source": "responsibledisclosure@mattermost.com", "tags": ["Vendor Advisory"], "url": "https://mattermost.com/security-updates"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://mattermost.com/security-updates"}], "sourceIdentifier": "responsibledisclosure@mattermost.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "responsibledisclosure@mattermost.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}