{"id":"CVE-2021-32649","aliases":["GHSA-wv23-pfj7-2mjj"],"url":"https://o3.security/vulnerability/CVE-2021-32649","summary":"October/System authenticated file write leads to remote code execution","details":"### Impact\n\nAssuming an attacker with \"create, modify and delete website pages\" privileges in the backend is able to execute PHP code by running specially crafted Twig code in the template markup.\n\n### Patches\n\nIssue has been patched in Build 473 and v1.1.6\n\n### Workarounds\n\nApply https://github.com/octobercms/october/commit/167b592eed291ae1563c8fcc5b9b34a03a300f26 to your installation manually if you are unable to upgrade.\n\n### References\n\nCredits to:\n• David Miller\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","published":"2022-01-14T15:15:07.523Z","modified":"2026-09-22T08:18:21.073506Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.01336,"percentile":0.69791,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"october/system","fixedVersion":"1.1.6"},{"ecosystem":"Packagist","name":"october/system","fixedVersion":"1.0.473"}],"fix":{"url":"https://github.com/octobercms/october/commit/167b592eed291ae1563c8fcc5b9b34a03a300f26","label":"octobercms/october@167b592"},"references":[{"type":"FIX","url":"https://github.com/octobercms/october/commit/167b592eed291ae1563c8fcc5b9b34a03a300f26"},{"type":"FIX","url":"https://github.com/octobercms/october/security/advisories/GHSA-wv23-pfj7-2mjj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32649"},{"type":"PACKAGE","url":"https://github.com/octobercms/october"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-22T08:18:21.073506Z"}}