{"action":"Upgrade contao/core-bundle to 5.3.50 or later.","affected":[{"fixed":"5.3.50","introduced":"4.1.0"},{"fixed":"5.7.12","introduced":"5.4.0-RC1"}],"component":"contao/core-bundle","cve_ids":["CVE-2026-107843"],"ecosystem":"Packagist","epss":0.0027,"exploited":false,"fixed_versions":["5.3.50","5.7.12"],"ghsa_id":"GHSA-mfxh-vp55-7gc6","id":"tcs_01M5KF5FYNJ2E9125JECGSD3R5","modified_at":"2026-10-09T21:00:10.232779369Z","published_at":"2026-10-09T20:54:04Z","references":["https://osv.dev/vulnerability/GHSA-mfxh-vp55-7gc6","https://github.com/contao/contao/security/advisories/GHSA-mfxh-vp55-7gc6","https://github.com/contao/contao/commit/2ea6117f9049db7221679251cfc41e67d941a74b","https://github.com/contao/contao","https://github.com/contao/contao/releases/tag/5.3.50","https://github.com/contao/contao/releases/tag/5.7.12"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-mfxh-vp55-7gc6","url":"https://osv.dev/vulnerability/GHSA-mfxh-vp55-7gc6"}],"summary":"Contao: The registration module re-sends activation mails"}