{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-40703","assignerOrgId":"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee","state":"PUBLISHED","assignerShortName":"Mattermost","dateReserved":"2023-11-22T11:18:57.610Z","datePublished":"2023-11-27T09:08:31.251Z","dateUpdated":"2025-06-03T14:01:59.793Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Mattermost","vendor":"Mattermost","versions":[{"lessThanOrEqual":"7.8.12","status":"affected","version":"0","versionType":"semver"},{"lessThanOrEqual":"8.1.3","status":"affected","version":"0","versionType":"semver"},{"lessThanOrEqual":"9.0.1","status":"affected","version":"0","versionType":"semver"},{"lessThanOrEqual":"9.1.0","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"9.1.1"},{"status":"unaffected","version":"9.0.2"},{"status":"unaffected","version":"7.8.13"},{"status":"unaffected","version":"8.1.4"}]}],"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 properly limit the characters allowed in different fields of a block in Mattermost Boards allowing&nbsp;a attacker to&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">consume excessive resources, possibly leading to Denial of Service, by</span>&nbsp;patching the field of a block using a specially crafted string.&nbsp;</p>"}],"value":"Mattermost fails to properly limit the characters allowed in different fields of a block in Mattermost Boards allowing a attacker to consume excessive resources, possibly leading to Denial of Service, by patching the field of a block using a specially crafted string. \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":"2023-11-27T09:08:31.251Z"},"references":[{"url":"https://mattermost.com/security-updates"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Update Mattermost Server to versions 9.1.1, 9.0.2, 7.8.13, 8.1.4 or higher.</p>"}],"value":"Update Mattermost Server to versions 9.1.1, 9.0.2, 7.8.13, 8.1.4 or higher.\n\n"}],"source":{"advisory":"MMSA-2023-00219","defect":["https://mattermost.atlassian.net/browse/MM-53233"],"discovery":"EXTERNAL"},"title":"Denial of Service via specially crafted block fields in Mattermost Boards","x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T18:38:51.081Z"},"title":"CVE Program Container","references":[{"url":"https://mattermost.com/security-updates","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-06-03T14:01:43.323670Z","id":"CVE-2023-40703","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":"2025-06-03T14:01:59.793Z"}}]}}