{"schema_version":1,"title":"FluentCMS vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 5 vulnerabilities in FluentCMS: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-86271, was published on 7 September 2026.","url":"https://junglewise.ai/threats/technologies/fluentcms","json_url":"https://junglewise.ai/threats/technologies/fluentcms.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/fluentcms","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":0,"all_time":5,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":1,"last_90_days":1,"last_365_days":5},"latest":[{"cve":"CVE-2026-86271","cvss":4.7,"epss":0.004,"slug":"cve-2026-86271-fluentcms-cross-tenant-authorization-bypass-in-permissionmanager","title":"FluentCMS cross-tenant authorization bypass in PermissionManager","severity":"medium","exploited":false,"published_at":"2026-09-07T05:16:55.21+00:00","url":"https://junglewise.ai/threats/cve-2026-86271-fluentcms-cross-tenant-authorization-bypass-in-permissionmanager"},{"cve":"CVE-2026-11434","cvss":2.4,"slug":"cve-2026-11434-fluentcms-stored-xss-in-blocks-plugin","title":"FluentCMS stored XSS in Blocks Plugin","severity":"low","exploited":false,"published_at":"2026-06-06T15:16:27.713+00:00","url":"https://junglewise.ai/threats/cve-2026-11434-fluentcms-stored-xss-in-blocks-plugin"},{"cve":"CVE-2025-70842","cvss":5.4,"slug":"cve-2025-70842-fluentcms-stored-xss-via-svg-upload-in-file-management","title":"FluentCMS stored XSS via SVG upload in File Management","severity":"medium","exploited":false,"published_at":"2026-05-12T15:16:12.163+00:00","url":"https://junglewise.ai/threats/cve-2025-70842-fluentcms-stored-xss-via-svg-upload-in-file-management"},{"cve":"CVE-2026-38947","cvss":6.1,"epss":0.0019,"slug":"cve-2026-38947-fluentcms-texthtml-plugin-cross-site-scripting-in-page-preview","title":"FluentCMS TextHTML plugin Cross-Site Scripting in page preview","severity":"medium","exploited":false,"published_at":"2026-05-05T20:16:38.513+00:00","url":"https://junglewise.ai/threats/cve-2026-38947-fluentcms-texthtml-plugin-cross-site-scripting-in-page-preview"},{"cve":"CVE-2025-15549","cvss":4.8,"slug":"cve-2025-15549-fluentcms-stored-xss-via-svg-upload-in-file-management","title":"FluentCMS stored XSS via SVG upload in File Management","severity":"medium","exploited":false,"published_at":"2026-01-29T20:16:07.01+00:00","url":"https://junglewise.ai/threats/cve-2025-15549-fluentcms-stored-xss-via-svg-upload-in-file-management"}],"weekly":[{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"FluentCMS","slug":"fluentcms","vendor":{"name":"Fluentcms","slug":"fluentcms","url":"https://junglewise.ai/threats/vendors/fluentcms"},"aliases":[],"category":"cms","homepage":"https://fluentcms.org/","repo_url":"https://github.com/FluentCMS/FluentCMS","description":"FluentCMS is an open-source content management system built on .NET.","url":"https://junglewise.ai/threats/technologies/fluentcms"},"most_severe":[{"cve":"CVE-2026-38947","cvss":6.1,"epss":0.0019,"slug":"cve-2026-38947-fluentcms-texthtml-plugin-cross-site-scripting-in-page-preview","title":"FluentCMS TextHTML plugin Cross-Site Scripting in page preview","severity":"medium","exploited":false,"published_at":"2026-05-05T20:16:38.513+00:00","url":"https://junglewise.ai/threats/cve-2026-38947-fluentcms-texthtml-plugin-cross-site-scripting-in-page-preview"},{"cve":"CVE-2025-70842","cvss":5.4,"slug":"cve-2025-70842-fluentcms-stored-xss-via-svg-upload-in-file-management","title":"FluentCMS stored XSS via SVG upload in File Management","severity":"medium","exploited":false,"published_at":"2026-05-12T15:16:12.163+00:00","url":"https://junglewise.ai/threats/cve-2025-70842-fluentcms-stored-xss-via-svg-upload-in-file-management"},{"cve":"CVE-2025-15549","cvss":4.8,"slug":"cve-2025-15549-fluentcms-stored-xss-via-svg-upload-in-file-management","title":"FluentCMS stored XSS via SVG upload in File Management","severity":"medium","exploited":false,"published_at":"2026-01-29T20:16:07.01+00:00","url":"https://junglewise.ai/threats/cve-2025-15549-fluentcms-stored-xss-via-svg-upload-in-file-management"},{"cve":"CVE-2026-86271","cvss":4.7,"epss":0.004,"slug":"cve-2026-86271-fluentcms-cross-tenant-authorization-bypass-in-permissionmanager","title":"FluentCMS cross-tenant authorization bypass in PermissionManager","severity":"medium","exploited":false,"published_at":"2026-09-07T05:16:55.21+00:00","url":"https://junglewise.ai/threats/cve-2026-86271-fluentcms-cross-tenant-authorization-bypass-in-permissionmanager"},{"cve":"CVE-2026-11434","cvss":2.4,"slug":"cve-2026-11434-fluentcms-stored-xss-in-blocks-plugin","title":"FluentCMS stored XSS in Blocks Plugin","severity":"low","exploited":false,"published_at":"2026-06-06T15:16:27.713+00:00","url":"https://junglewise.ai/threats/cve-2026-11434-fluentcms-stored-xss-in-blocks-plugin"}],"generated_at":"2026-09-28T03:07:00.154823+00:00"}