{"id":"CVE-2023-3042","aliases":["EUVD-2023-43734","GHSA-4473-7649-rj9x"],"status":"published","title":"CNA SHORTNAME: dotCMSORG UUID: 5b9d93f2-25c7-46b4-ab60-d201718c9dd8","description":"In dotCMS, versions mentioned, a flaw in the NormalizationFilter does not strip double slashes (//) from URLs, potentially enabling bypasses for XSS and access controls. An example affected URL is  https://demo.dotcms.com//html/portlet/ext/files/edit_text_inc.jsp , which should return a 404 response but didn't. \n\nThe oversight in the default invalid URL character list can be viewed at the provided  GitHub link https://github.com/dotCMS/core/blob/master/dotCMS/src/main/java/com/dotcms/filters/NormalizationFilter.java#L37 . \n\nTo mitigate, users can block URLs with double slashes at firewalls or utilize dotCMS config variables.\n\nSpecifically, they can use the DOT_URI_NORMALIZATION_FORBIDDEN_STRINGS environmental variable to add // to the list of invalid strings. \n\nAdditionally, the DOT_URI_NORMALIZATION_FORBIDDEN_REGEX variable offers more detailed control, for instance, to block //html.* URLs.\n\nFix Version:23.06+, LTS 22.03.7+, LTS 23.01.4+","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00409,"percentile":0.35474,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-79"],"published":"2023-10-17T22:52:05Z","modified":"2026-10-28T02:30:41Z","products":[{"vendor":"dotcms","product":"dotcms"},{"vendor":"dotcms","product":"dotcms core"}],"references":[{"url":"https://www.dotcms.com/security/SI-68","tags":["x_transferred","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-3042","tags":["advisory"]},{"url":"https://auth.dotcms.com/security/SI-68"},{"url":"https://github.com/advisories/GHSA-4473-7649-rj9x"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3042.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-3042","title":"CNA SHORTNAME: dotCMSORG UUID: 5b9d93f2-25c7-46b4-ab60-d201718c9dd8","description":"In dotCMS, versions mentioned, a flaw in the NormalizationFilter does not strip double slashes (//) from URLs, potentially enabling bypasses for XSS and access controls. An example affected URL is  https://demo.dotcms.com//html/portlet/ext/files/edit_text_inc.jsp , which should return a 404 response but didn't. \n\nThe oversight in the default invalid URL character list can be viewed at the provided  GitHub link https://github.com/dotCMS/core/blob/master/dotCMS/src/main/java/com/dotcms/filters/NormalizationFilter.java#L37 . \n\nTo mitigate, users can block URLs with double slashes at firewalls or utilize dotCMS config variables.\n\nSpecifically, they can use the DOT_URI_NORMALIZATION_FORBIDDEN_STRINGS environmental variable to add // to the list of invalid strings. \n\nAdditionally, the DOT_URI_NORMALIZATION_FORBIDDEN_REGEX variable offers more detailed control, for instance, to block //html.* URLs.\n\nFix Version:23.06+, LTS 22.03.7+, LTS 23.01.4+","status":"published","published":"2023-10-17T22:52:05.453Z","modified":"2025-06-12T15:05:44.26Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:24.360381Z"}],"euvd":[{"id":"EUVD-2023-43734","description":"In dotCMS, versions mentioned, a flaw in the NormalizationFilter does not strip double slashes (//) from URLs, potentially enabling bypasses for XSS and access controls. An example affected URL is  https://demo.dotcms.com//html/portlet/ext/files/edit_text_inc.jsp , which should return a 404 response but didn't. \n\nThe oversight in the default invalid URL character list can be viewed at the provided  GitHub link https://github.com/dotCMS/core/blob/master/dotCMS/src/main/java/com/dotcms/filters/NormalizationFilter.java#L37 . \n\nTo mitigate, users can block URLs with double slashes at firewalls or utilize dotCMS config variables.\n\nSpecifically, they can use the DOT_URI_NORMALIZATION_FORBIDDEN_STRINGS environmental variable to add // to the list of invalid strings. \n\nAdditionally, the DOT_URI_NORMALIZATION_FORBIDDEN_REGEX variable offers more detailed control, for instance, to block //html.* URLs.\n\nFix Version:23.06+, LTS 22.03.7+, LTS 23.01.4+","status":"published","published":"2023-10-17T22:52:05Z","modified":"2025-06-12T15:05:44Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T20:32:24.598995Z"}],"ghsa":[{"id":"GHSA-4473-7649-rj9x","title":"In dotCMS, versions mentioned, a flaw in the NormalizationFilter does not strip double slashes (/...","description":"In dotCMS, versions mentioned, a flaw in the NormalizationFilter does not strip double slashes (//) from URLs, potentially enabling bypasses for XSS and access controls. An example affected URL is  https://demo.dotcms.com//html/portlet/ext/files/edit_text_inc.jsp https://demo.dotcms.com//html/portlet/ext/files/edit_text_inc.jsp , which should return a 404 response but didn't. \n\nThe oversight in the default invalid URL character list can be viewed at the provided  GitHub link https://github.com/dotCMS/core/blob/master/dotCMS/src/main/java/com/dotcms/filters/NormalizationFilter.java#L37 . \n\nTo mitigate, users can block URLs with double slashes at firewalls or utilize dotCMS config variables.\n\nSpecifically, they can use the DOT_URI_NORMALIZATION_FORBIDDEN_STRINGS environmental variable to add // to the list of invalid strings. \n\nAdditionally, the DOT_URI_NORMALIZATION_FORBIDDEN_REGEX variable offers more detailed control, for instance, to block //html.* URLs.\n\nFix Version:23.06+, LTS 22.03.7+, LTS 23.01.4+\n","status":"published","published":"2023-10-18T00:31:42Z","modified":"2024-04-04T08:45:25Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-20","CWE-79"],"updated_at":"2026-11-02T14:57:01.229221Z"}],"nvd":[{"id":"CVE-2023-3042","description":"In dotCMS, versions mentioned, a flaw in the NormalizationFilter does not strip double slashes (//) from URLs, potentially enabling bypasses for XSS and access controls. An example affected URL is  https://demo.dotcms.com//html/portlet/ext/files/edit_text_inc.jsp , which should return a 404 response but didn't. \n\nThe oversight in the default invalid URL character list can be viewed at the provided  GitHub link https://github.com/dotCMS/core/blob/master/dotCMS/src/main/java/com/dotcms/filters/NormalizationFilter.java#L37 . \n\nTo mitigate, users can block URLs with double slashes at firewalls or utilize dotCMS config variables.\n\nSpecifically, they can use the DOT_URI_NORMALIZATION_FORBIDDEN_STRINGS environmental variable to add // to the list of invalid strings. \n\nAdditionally, the DOT_URI_NORMALIZATION_FORBIDDEN_REGEX variable offers more detailed control, for instance, to block //html.* URLs.\n\nFix Version:23.06+, LTS 22.03.7+, LTS 23.01.4+","status":"published","published":"2023-10-17T23:15:11.92Z","modified":"2026-06-17T06:13:14.403Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:08:39.058878Z"}],"osv":[{"id":"CVE-2023-3042","title":"CNA SHORTNAME: dotCMSORG UUID: 5b9d93f2-25c7-46b4-ab60-d201718c9dd8","description":"In dotCMS, versions mentioned, a flaw in the NormalizationFilter does not strip double slashes (//) from URLs, potentially enabling bypasses for XSS and access controls. An example affected URL is  https://demo.dotcms.com//html/portlet/ext/files/edit_text_inc.jsp , which should return a 404 response but didn't. \n\nThe oversight in the default invalid URL character list can be viewed at the provided  GitHub link https://github.com/dotCMS/core/blob/master/dotCMS/src/main/java/com/dotcms/filters/NormalizationFilter.java#L37 . \n\nTo mitigate, users can block URLs with double slashes at firewalls or utilize dotCMS config variables.\n\nSpecifically, they can use the DOT_URI_NORMALIZATION_FORBIDDEN_STRINGS environmental variable to add // to the list of invalid strings. \n\nAdditionally, the DOT_URI_NORMALIZATION_FORBIDDEN_REGEX variable offers more detailed control, for instance, to block //html.* URLs.\n\nFix Version:23.06+, LTS 22.03.7+, LTS 23.01.4+","status":"published","published":"2023-10-17T22:52:05.453Z","modified":"2026-10-28T02:30:41.504954189Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:31.790231Z"}]}}