{"affected":[{"affectedData":[{"defaultStatus":"unaffected","product":"Mattermost","vendor":"Mattermost","versions":[{"lessThanOrEqual":"9.4.2","status":"affected","version":"9.4.0","versionType":"semver"},{"lessThanOrEqual":"9.3.1","status":"affected","version":"9.3.0","versionType":"semver"},{"lessThanOrEqual":"9.2.5","status":"affected","version":"9.2.0","versionType":"semver"},{"lessThanOrEqual":"8.1.9","status":"affected","version":"8.1.0","versionType":"semver"},{"status":"unaffected","version":"9.5.0"},{"status":"unaffected","version":"9.4.3"},{"status":"unaffected","version":"9.3.2"},{"status":"unaffected","version":"9.2.6"},{"status":"unaffected","version":"8.1.10"}]}],"source":"responsibledisclosure@mattermost.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","matchCriteriaId":"0ADAC025-32F2-4971-81F3-4D2939890060","versionEndExcluding":"8.1.10","versionStartIncluding":"8.1.0","vulnerable":true},{"criteria":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","matchCriteriaId":"71A20DFB-85FA-480C-956A-24B50AB1862D","versionEndExcluding":"9.2.6","versionStartIncluding":"9.2.0","vulnerable":true},{"criteria":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","matchCriteriaId":"AA0D2B39-6A65-4B91-925D-20087EF4CCB9","versionEndExcluding":"9.3.2","versionStartIncluding":"9.3.0","vulnerable":true},{"criteria":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","matchCriteriaId":"74D75B50-ED53-47E4-A43A-1D3D8CFE4F8E","versionEndExcluding":"9.4.3","versionStartIncluding":"9.4.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9.4.3 fail to limit the number of @-mentions processed per message, allowing an authenticated attacker to crash the client applications of other users via large, crafted messages.\n\n"},{"lang":"es","value":"Las versiones de Mattermost 8.1.x anteriores a 8.1.10, 9.2.x anteriores a 9.2.6, 9.3.x anteriores a 9.3.2 y 9.4.x anteriores a 9.4.3 no limitan el número de @menciones procesadas por mensaje, lo que permite un atacante autenticado para bloquear las aplicaciones cliente de otros usuarios a través de mensajes grandes y elaborados"}],"id":"CVE-2024-2446","lastModified":"2026-06-17T07:24:33.170","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":"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":"nvd@nist.gov","type":"Primary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2024-2446","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2024-03-15T17:53:09.280852Z","version":"2.0.3"}}]},"published":"2024-03-15T10:15:08.230","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":"Analyzed","weaknesses":[{"description":[{"lang":"en","value":"CWE-400"}],"source":"responsibledisclosure@mattermost.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-770"}],"source":"nvd@nist.gov","type":"Primary"}]}