{"id":"CVE-2025-9078","revision":"ff95877c3cff4cc89ef2459aaf1f43a7","records":[{"revision":"ff95877c3cff4cc89ef2459aaf1f43a7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-9078","aliases":[],"title":"Weak cache keys lead to post IDOR and link preview poisoning","description":"Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.1, 10.9.x <= 10.9.3 fail to properly validate cache keys for link metadata which allows authenticated users to access unauthorized posts and poison link previews via hash collision attacks on FNV-1 hashing","state":0,"publishedAt":"2025-09-15T10:10:06.886+00:00","modifiedAt":"2025-09-15T13:57:49.086+00:00","affected":[{"ecosystem":"Vendor product","name":"Mattermost","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"product\": \"Mattermost\",\n                    \"vendor\": \"Mattermost\",\n                    \"versions\": [\n                        {\n                            \"lessThanOrEqual\": \"10.8.3\",\n                            \"status\": \"affected\",\n                            \"version\": \"10.8.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"lessThanOrEqual\": \"10.5.8\",\n                            \"status\": \"affected\",\n                            \"version\": \"10.5.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"lessThanOrEqual\": \"9.11.17\",\n                            \"status\": \"affected\",\n                            \"version\": \"9.11.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"lessThanOrEqual\": \"10.10.1\",\n                            \"status\": \"affected\",\n                            \"version\": \"10.10.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"lessThanOrEqual\": \"10.9.3\",\n                            \"status\": \"affected\",\n                            \"version\": \"10.9.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"10.11.0\",\n                            \"status\": \"unaffected\"\n                        },\n                        {\n                            \"version\": \"10.8.4\",\n                            \"status\": \"unaffected\"\n                        },\n                        {\n                            \"version\": \"10.5.9\",\n                            \"status\": \"unaffected\"\n                        },\n                        {\n                            \"version\": \"9.11.18\",\n                            \"status\": \"unaffected\"\n                        },\n                        {\n                            \"version\": \"10.10.2\",\n                            \"status\": \"unaffected\"\n                        },\n                        {\n                            \"version\": \"10.9.4\",\n                            \"status\": \"unaffected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3,"severity":"MEDIUM"}],"references":["https://mattermost.com/security-updates"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-9078","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-9078","identifiers":["CVE-2025-9078"]},"retained":false,"historicalAffected":[]}],"coverage":[]}