{"affected":[{"affectedData":[{"product":"Mattermost","vendor":"Mattermost","versions":[{"lessThanOrEqual":"7.1.x","status":"affected","version":"unspecified","versionType":"custom"}]}],"source":"responsibledisclosure@mattermost.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","matchCriteriaId":"9507DE58-215B-472C-8410-DF0ED6F6CF81","versionEndExcluding":"7.2.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"Mattermost version 7.1.x and earlier fails to sufficiently process a specifically crafted GIF file when it is uploaded while drafting a post, which allows authenticated users to cause resource exhaustion while processing the file, resulting in server-side Denial of Service."},{"lang":"es","value":"Mattermost versión 7.1.x y anteriores, no procesan suficientemente un archivo GIF específicamente diseñado cuando es descargado mientras es redactada una publicación, lo que permite a usuarios autenticados causar el agotamiento de los recursos mientras es procesado el archivo, resultando en una Denegación de Servicio del lado del servidor."}],"id":"CVE-2022-3257","lastModified":"2026-06-17T04:59:10.270","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":3.1,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"exploitabilityScore":1.6,"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-2022-3257","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2024-12-06T22:52:36.614652Z","version":"2.0.3"}}]},"published":"2022-09-23T15:15:13.857","references":[{"source":"responsibledisclosure@mattermost.com","tags":["Exploit","Third Party Advisory"],"url":"https://hackerone.com/reports/1620170"},{"source":"responsibledisclosure@mattermost.com","tags":["Vendor Advisory"],"url":"https://mattermost.com/security-updates/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"],"url":"https://hackerone.com/reports/1620170"},{"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":"CWE-434"}],"source":"nvd@nist.gov","type":"Primary"}]}