{"id":"CVE-2025-56236","title":"FormCms v0.5.5 contains a stored cross-site scripting (XSS) vulnerability in the avatar upload feature","summary":"FormCms v0.5.5 contains a stored cross-site scripting (XSS) vulnerability in the avatar upload feature. Authenticated users can upload .html files containing malicious JavaScript, which are accessible via a public URL. When a privileged …","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"vendor":"formcms","product":"formcms","affected":["formcms >= 0.5.5, < 0.5.7"],"patched":["formcms 0.5.7"],"published":"2025-08-28","updated":"2026-09-26","sourceUpdated":"2026-09-26T00:10:00.127","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-56236","references":[{"url":"https://github.com/FormCms/FormCms/issues/27","label":"cve@mitre.org"},{"url":"https://github.com/KKC73/me/blob/main/CVE-2025-56236/README.md","label":"cve@mitre.org"}],"tags":["nvd"],"epss":0.00212,"epssPercentile":0.10273,"ingestedAt":"2026-09-26T00:22:39.886Z","slug":"CVE-2025-56236","body":"## Overview\n\nFormCms v0.5.5 contains a stored cross-site scripting (XSS) vulnerability in the avatar upload feature. Authenticated users can upload .html files containing malicious JavaScript, which are accessible via a public URL. When a privileged user accesses the file, the script executes in their browser context.\n\n## Affected\n\n- `formcms >= 0.5.5, < 0.5.7`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `formcms 0.5.7`","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}