{"id":"CVE-2026-13426","revision":"70330f6e9235490bb45af0248726cf47","records":[{"revision":"70330f6e9235490bb45af0248726cf47","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-13426","aliases":[],"title":"Client4 fails to validate path parameters","description":"The Mattermost Go module github.com/mattermost/mattermost/server/public versions < v0.1.22 fail to validate path parameters when constructing API route paths which allows an attacker to redirect API calls to unintended endpoints via crafted IDs containing path traversal components. Mattermost Advisory ID: MMSA-2025-00532","state":0,"publishedAt":"2026-06-26T13:47:10.09+00:00","modifiedAt":"2026-06-26T14:39:00.126+00:00","affected":[{"ecosystem":"Vendor product","name":"github.com/mattermost/mattermost/server/public","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"product\": \"github.com/mattermost/mattermost/server/public\",\n                    \"vendor\": \"Mattermost\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"v0.1.22\",\n                            \"status\": \"affected\",\n                            \"version\": \"v0.0.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"v0.1.22\",\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:L/A:N","score":5.4,"severity":"MEDIUM"}],"references":["https://mattermost.com/security-updates"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-13426","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-13426","identifiers":["CVE-2026-13426"]},"retained":false,"historicalAffected":[]}],"coverage":[]}