{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116516","assignerOrgId":"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee","state":"PUBLISHED","assignerShortName":"Mattermost","dateReserved":"2026-10-26T13:52:45.402Z","datePublished":"2026-10-26T13:56:57.973Z","dateUpdated":"2026-10-26T15:35:50.283Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Mattermost","vendor":"Mattermost","versions":[{"lessThanOrEqual":"<=11.9 11.1.9 11.5.8 11.10.7.0","status":"affected","version":"<=11.9 11.1.9 11.5.8 11.10.7.0","versionType":"semver"},{"version":"11.10.0","status":"unaffected"},{"version":"11.9.2","status":"unaffected"},{"version":"11.8.6","status":"unaffected"},{"version":"11.7.11","status":"unaffected"}]}],"credits":[{"lang":"en","type":"finder","value":"alimursaliyev"}],"descriptions":[{"lang":"en","value":"Mattermost versions <=11.9 11.1.9 11.5.8 11.10.7.0 fail to validate Zoom chat line length before slicing which allows an authenticated attacker to crash the Agents plugin via summarizing a Zoom chat transcription containing short continuation lines. Mattermost Advisory ID: MMSA-2026-00723"}],"metrics":[{"cvssV3_1":{"attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseSeverity":"MEDIUM","baseScore":6.5},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","description":"CWE-754: Improper Check for Unusual or Exceptional Conditions","cweId":"CWE-754"}]}],"references":[{"url":"https://mattermost.com/security-updates","name":"MMSA-2026-00723","tags":["vendor-advisory"]}],"solutions":[{"value":"Update Mattermost to versions 11.10.0, 11.9.2, 11.8.6, 11.7.11 or higher.","lang":"en"}],"source":{"advisory":"MMSA-2026-00723","defect":["https://mattermost.atlassian.net/browse/MM-69780"],"discovery":"EXTERNAL"},"title":"Insufficient length validation when parsing Zoom chat transcriptions","providerMetadata":{"orgId":"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee","shortName":"Mattermost","dateUpdated":"2026-10-26T13:56:57.973Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-116516","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-26T14:54:35.705341Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-26T15:35:50.283Z"}}]}}