{"id":"RHLW-2026-e0e5640c50ceea84","summary":"Lightwell Security Advisory: thymeleaf 3.0.15.RELEASE-rhlw-00009","details":"Red Hat Lightwell has released org.thymeleaf:thymeleaf 3.0.15.RELEASE-rhlw-00009 with backported fixes for CVE-2026-40477, CVE-2026-40478, and CVE-2026-41901.\n\nCVE-2026-40477: Improper restriction of the scope of accessible objects in Thymeleaf expressions\n\nCVE-2026-40478: Improper neutralization of specific syntax patterns for unauthorized expressions in Thymeleaf\n\nCVE-2026-41901: Thymeleaf: Improper recognition of unauthorized syntax patterns in sandboxed Thymeleaf expressions\n\nThis patched artifact is a drop-in replacement for org.thymeleaf:thymeleaf 3.0.15.RELEASE-rhlw-00009 from Maven Central.","modified":"2026-10-27T08:58:01.218099450Z","published":"2026-10-21T19:19:23Z","upstream":["CVE-2026-40477","CVE-2026-40478","CVE-2026-41901","GHSA-c9ph-gxww-7744","GHSA-r4v4-5mwr-2fwr","GHSA-xjw8-8c5c-9r79"],"references":[{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40477.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:21772"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-40477"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40477.json"},{"type":"ADVISORY","url":"https://github.com/thymeleaf/thymeleaf/security/advisories/GHSA-r4v4-5mwr-2fwr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40477"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-r4v4-5mwr-2fwr"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40478.json"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-40478"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40478.json"},{"type":"ADVISORY","url":"https://github.com/thymeleaf/thymeleaf/security/advisories/GHSA-xjw8-8c5c-9r79"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40478"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-xjw8-8c5c-9r79"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41901.json"},{"type":"ADVISORY","url":"https://github.com/thymeleaf/thymeleaf/security/advisories/GHSA-c9ph-gxww-7744"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41901"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-c9ph-gxww-7744"}],"affected":[{"package":{"name":"org.thymeleaf:thymeleaf","ecosystem":"Red Hat Lightwell:Maven","purl":"pkg:maven/org.thymeleaf/thymeleaf"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.15.RELEASE-rhlw-00009"}]}],"versions":["1.0.0","1.0.0-beta1","1.0.0-beta2","1.0.0-beta3","1.0.0-beta4","1.0.0-beta5","1.0.1","1.1.0","1.1.1","1.1.2","1.1.3","1.1.4","1.1.5","2.0.0","2.0.0-beta1","2.0.0-beta2","2.0.1","2.0.10","2.0.11","2.0.12","2.0.13","2.0.14","2.0.15","2.0.16","2.0.17","2.0.18","2.0.19","2.0.2","2.0.20","2.0.21","2.0.3","2.0.4","2.0.5","2.0.6","2.0.7","2.0.8","2.0.9","2.1.0-beta1","2.1.0-beta2","2.1.0-m1","2.1.0-m2","2.1.0-m3","2.1.0.RELEASE","2.1.1.RELEASE","2.1.2.RELEASE","2.1.3.RELEASE","2.1.4.RELEASE","2.1.5.RELEASE","2.1.6.RELEASE","3.0.0.ALPHA01","3.0.0.ALPHA02","3.0.0.ALPHA03","3.0.0.BETA01","3.0.0.BETA02","3.0.0.BETA03","3.0.0.RELEASE","3.0.1.RELEASE","3.0.10.RELEASE","3.0.11.RELEASE","3.0.12.RELEASE","3.0.13.RELEASE","3.0.14.RELEASE","3.0.15.RELEASE","3.0.15.RELEASE-rhlw-00009","3.0.2.RELEASE","3.0.3.RELEASE","3.0.4.RELEASE","3.0.5.RELEASE","3.0.6.RELEASE","3.0.7.RELEASE","3.0.8.RELEASE","3.0.9.RELEASE","m1"],"database_specific":{"lightwell":{"repository_url":"https://packages.redhat.com/lightwell/java/remediated/","backport_base_version":"3.0.15.RELEASE-rhlw-00009","remediated_version":"3.0.15.RELEASE-rhlw-00009"},"source":"https://github.com/project-lightwell/lightwell-osv/blob/main/advisories/RHLW-2026-e0e5640c50ceea84.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"}],"credits":[{"name":"Red Hat Lightwell","type":"REMEDIATION_DEVELOPER"}]}