{"id":"CVE-2025-13767","state":"PUBLISHED","title":"Unauthorized Read Access to Private Channel Posts via Mattermost Jira Plugin","description":"Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have access to.","publishedAt":"2025-12-24T08:01:27.157Z","updatedAt":"2025-12-24T16:36:22.999Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","source":"Mattermost"},"assigner":"Mattermost","products":["Mattermost Mattermost"],"affected":[{"vendor":"Mattermost","product":"Mattermost","defaultStatus":"unaffected","versions":[{"version":"11.1.0","status":"affected","lessThanOrEqual":"11.1.0","versionType":"semver"},{"version":"11.0.0","status":"affected","lessThanOrEqual":"11.0.5","versionType":"semver"},{"version":"10.12.0","status":"affected","lessThanOrEqual":"10.12.3","versionType":"semver"},{"version":"10.11.0","status":"affected","lessThanOrEqual":"10.11.7","versionType":"semver"},{"version":"11.2.0","status":"unaffected"},{"version":"11.1.1","status":"unaffected"},{"version":"11.0.6","status":"unaffected"},{"version":"10.12.4","status":"unaffected"},{"version":"10.11.8","status":"unaffected"}]}],"references":["https://mattermost.com/security-updates"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:08:31.050Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/13xxx/CVE-2025-13767.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-13767","state":"PUBLISHED","datePublished":"2025-12-24T08:01:27.157Z","dateUpdated":"2025-12-24T16:36:22.999Z","assignerShortName":"Mattermost","assignerOrgId":"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee","dateReserved":"2025-11-27T18:02:05.323Z"},"containers":{"cna":{"title":"Unauthorized Read Access to Private Channel Posts via Mattermost Jira Plugin","descriptions":[{"lang":"en","value":"Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have access to."}],"affected":[{"vendor":"Mattermost","product":"Mattermost","defaultStatus":"unaffected","versions":[{"version":"11.1.0","status":"affected","lessThanOrEqual":"11.1.0","versionType":"semver"},{"version":"11.0.0","status":"affected","lessThanOrEqual":"11.0.5","versionType":"semver"},{"version":"10.12.0","status":"affected","lessThanOrEqual":"10.12.3","versionType":"semver"},{"version":"10.11.0","status":"affected","lessThanOrEqual":"10.11.7","versionType":"semver"},{"version":"11.2.0","status":"unaffected"},{"version":"11.1.1","status":"unaffected"},{"version":"11.0.6","status":"unaffected"},{"version":"10.12.4","status":"unaffected"},{"version":"10.11.8","status":"unaffected"}]}],"references":[{"url":"https://mattermost.com/security-updates"}],"metrics":[{"cvssV3_1":{"attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE","version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","baseSeverity":"MEDIUM","baseScore":4.3},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","type":"CWE","description":"CWE-863: Incorrect Authorization"}]}],"providerMetadata":{"shortName":"Mattermost","orgId":"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee","dateUpdated":"2025-12-24T08:01:27.157Z"},"credits":[{"lang":"en","type":"finder","value":"Juho Forsén"}],"solutions":[{"value":"Update Mattermost to versions 11.2.0, 11.1.1, 11.0.6, 10.12.4, 10.11.8 or higher.","lang":"en"}],"source":{"advisory":"MMSA-2025-00545","defect":["https://mattermost.atlassian.net/browse/MM-66328"],"discovery":"{\"self\"=>\"https://mattermost.atlassian.net/rest/api/2/customFieldOption/10557\", \"value\"=>\"Internal\", \"id\"=>\"10557\"}"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-12-24T16:36:10.970492Z","id":"CVE-2025-13767","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-12-24T16:36:22.999Z"}}]}}}