{"action":"Upgrade org.thymeleaf:thymeleaf to 3.1.4.RELEASE or later.","affected":[{"fixed":"3.1.4.RELEASE","introduced":"0"}],"component":"org.thymeleaf:thymeleaf","cve_ids":["CVE-2026-40478"],"ecosystem":"Maven","epss":0.01102,"exploited":false,"fixed_versions":["3.1.4.RELEASE"],"ghsa_id":"GHSA-xjw8-8c5c-9r79","id":"tcs_01M5N9JHATA20X768TA7P4NSH2","modified_at":"2026-05-05T16:12:18.897503Z","published_at":"2026-04-15T19:46:23Z","references":["https://osv.dev/vulnerability/GHSA-xjw8-8c5c-9r79","https://github.com/thymeleaf/thymeleaf/security/advisories/GHSA-xjw8-8c5c-9r79","https://nvd.nist.gov/vuln/detail/CVE-2026-40478","https://github.com/thymeleaf/thymeleaf"],"severity":{"label":"critical","score":9},"sources":[{"source":"osv","source_id":"GHSA-xjw8-8c5c-9r79","url":"https://osv.dev/vulnerability/GHSA-xjw8-8c5c-9r79"}],"summary":"Improper neutralization of specific syntax patterns for unauthorized expressions in Thymeleaf"}