{"id":"CVE-2025-13523","state":"PUBLISHED","title":"Cross-Site Scripting (XSS) via Unescaped Display Names in Mattermost Confluence Plugin OAuth2 Flow","description":"Mattermost Confluence plugin version <1.7.0 fails to properly escape user-controlled display names in HTML template rendering which allows authenticated Confluence users with malicious display names to execute arbitrary JavaScript in victim browsers via sending a specially crafted OAuth2 connection link that, when visited, renders the attacker's display name without proper sanitization. Mattermost Advisory ID: MMSA-2025-00557","publishedAt":"2026-02-06T15:52:31.003Z","updatedAt":"2026-02-06T16:23:06.496Z","severity":{"score":7.7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","source":"Mattermost"},"assigner":"Mattermost","products":["Mattermost Mattermost Confluence Plugin"],"affected":[{"vendor":"Mattermost","product":"Mattermost Confluence Plugin","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.7.0","versionType":"semver"},{"version":"1.7.0","status":"unaffected"}],"repo":"https://github.com/mattermost/mattermost-plugin-confluence"}],"references":["https://mattermost.com/security-updates"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:08:31.050Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/13xxx/CVE-2025-13523.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-13523","state":"PUBLISHED","datePublished":"2026-02-06T15:52:31.003Z","dateUpdated":"2026-02-06T16:23:06.496Z","assignerShortName":"Mattermost","assignerOrgId":"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee","dateReserved":"2025-11-21T19:29:16.051Z"},"containers":{"cna":{"title":"Cross-Site Scripting (XSS) via Unescaped Display Names in Mattermost Confluence Plugin OAuth2 Flow","descriptions":[{"lang":"en","value":"Mattermost Confluence plugin version <1.7.0 fails to properly escape user-controlled display names in HTML template rendering which allows authenticated Confluence users with malicious display names to execute arbitrary JavaScript in victim browsers via sending a specially crafted OAuth2 connection link that, when visited, renders the attacker's display name without proper sanitization. Mattermost Advisory ID: MMSA-2025-00557"}],"affected":[{"vendor":"Mattermost","product":"Mattermost Confluence Plugin","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.7.0","versionType":"semver"},{"version":"1.7.0","status":"unaffected"}],"repo":"https://github.com/mattermost/mattermost-plugin-confluence"}],"references":[{"url":"https://mattermost.com/security-updates","name":"MMSA-2025-00557","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Mattermost","orgId":"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee","dateUpdated":"2026-02-06T15:52:31.003Z"},"credits":[{"lang":"en","type":"finder","value":"daw10"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Update Mattermost Confluence plugin to versions 1.7.0 or higher.</p>"}],"value":"Update Mattermost Confluence plugin to versions 1.7.0 or higher."}],"source":{"advisory":"MMSA-2025-00557","defect":["https://mattermost.atlassian.net/browse/MM-66724"],"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-06T16:22:37.565365Z","id":"CVE-2025-13523","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":"2026-02-06T16:23:06.496Z"}}]}}}