{"id":"CVE-2020-15248","aliases":["GHSA-rfjc-xrmf-5vvw"],"url":"https://o3.security/vulnerability/CVE-2020-15248","summary":"Privilege escalation by backend users assigned to the default \"Publisher\" system role","details":"### Impact\nBackend users with the default \"Publisher\" system role have access to create & manage users where they can choose which role the new user has. This means that a user with \"Publisher\" access has the ability to escalate their access to \"Developer\" access. \n\n### Patches\nIssue has been patched in Build 470 (v1.0.470) & v1.1.1.\n\n### Workarounds\nApply https://github.com/octobercms/october/commit/78a37298a4ed4602b383522344a31e311402d829 to your installation manually if unable to upgrade to Build 470 or v1.1.1.\n\n### References\nReported by [Hoan Hoang](https://github.com/hoanhp)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [hello@octobercms.com](mailto:hello@octobercms.com)\n\n### Threat assessment:\n<img width=\"1098\" alt=\"Screen Shot 2020-10-10 at 1 37 25 PM\" src=\"https://user-images.githubusercontent.com/7253840/95663611-e6326c80-0afd-11eb-8a1e-8b767a7202fb.png\">","published":"2020-11-23T20:15:12.463Z","modified":"2026-10-20T10:51:53.765446457Z","cvss":{"score":4.2,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L"},"epss":{"score":0.00313,"percentile":0.24242,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"october/backend","fixedVersion":"1.0.470"}],"fix":{"url":"https://github.com/octobercms/october/commit/78a37298a4ed4602b383522344a31e311402d829","label":"octobercms/october@78a3729"},"references":[{"type":"ADVISORY","url":"https://github.com/octobercms/october/security/advisories/GHSA-rfjc-xrmf-5vvw"},{"type":"FIX","url":"https://github.com/octobercms/october/commit/78a37298a4ed4602b383522344a31e311402d829"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15248"},{"type":"WEB","url":"https://github.com/octobercms/october/commit/4c650bb775ab849e48202a4923bac93bd74f9982"},{"type":"PACKAGE","url":"https://github.com/octobercms/october"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T10:51:53.765446457Z"}}