{"id":"CVE-2021-31721","title":"Chevereto before 3.17.1 allows Cross Site Scripting (XSS) via an image title at the image upload stage.","summary":"Chevereto before 3.17.1 allows Cross Site Scripting (XSS) via an image title at the image upload stage.","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":"chevereto","product":"chevereto","affected":["chevereto < 3.17.1"],"patched":["chevereto 3.17.1"],"published":"2021-06-30","updated":"2026-07-05","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-31721","references":[{"url":"http://packetstormsecurity.com/files/164183/Cloudron-6.2-Cross-Site-Scripting.html","label":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/49859","label":"cve@mitre.org"},{"url":"http://chevereto.com","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/164183/Cloudron-6.2-Cross-Site-Scripting.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/49859","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00894,"epssPercentile":0.57801,"ingestedAt":"2026-07-06T17:03:23.534Z","slug":"CVE-2021-31721","body":"## Overview\n\nChevereto before 3.17.1 allows Cross Site Scripting (XSS) via an image title at the image upload stage.\n\n## Affected\n\n- `chevereto < 3.17.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `chevereto 3.17.1`","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}