{"id":"CVE-2023-33194","aliases":["GHSA-3wxg-w96j-8hq9"],"url":"https://o3.security/vulnerability/CVE-2023-33194","summary":"CraftCMS stored XSS in Quick Post widget error message","details":"### Summary\nThe platform does not filter input and encode output in Quick Post validation error message, which can deliver an XSS payload.\n\n### Details\nOld CVE fixed the XSS in label HTML but didn’t fix it when clicking save.\n\n### PoC\n1. Login at admin\n2. Go to setting\n3. Create a Section\n4. On Entry page, click Edit label\n5. Inject the XSS payload into the label and save\n6. On the admin dashboard choose new widget -> Quick Post\n7. In Quick Post, click save with blank slug; The XSS will be executed\n\n    \"errors\":{\"title\":[\"<script>alert('nono')</script> cannot be blank.\"],\"slug\":[\"Slug cannot be blank.\"]\n\nFixed in https://github.com/craftcms/cms/commit/9d0cd0bda7c8a830a3373f8c0f06943e519ac888\n","published":"2023-05-26T20:30:23.382Z","modified":"2026-10-28T02:31:02.175463336Z","cvss":{"score":3.7,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Packagist","name":"craftcms/cms","fixedVersion":"4.4.6"},{"ecosystem":"Packagist","name":"craftcms/cms","fixedVersion":"3.8.6"}],"fix":{"url":"https://github.com/craftcms/cms/commit/9d0cd0bda7c8a830a3373f8c0f06943e519ac888","label":"craftcms/cms@9d0cd0b"},"references":[{"type":"WEB","url":"https://github.com/craftcms/cms/releases/tag/4.4.6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/33xxx/CVE-2023-33194.json"},{"type":"ADVISORY","url":"https://github.com/craftcms/cms/security/advisories/GHSA-3wxg-w96j-8hq9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-33194"},{"type":"FIX","url":"https://github.com/craftcms/cms/commit/9d0cd0bda7c8a830a3373f8c0f06943e519ac888"},{"type":"PACKAGE","url":"https://github.com/craftcms/cms"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:31:02.175463336Z"}}