{"action":"Upgrade getkirby/cms to 3.5.8 or later.","affected":[{"fixed":"3.5.8","introduced":"3.5.0"}],"component":"getkirby/cms","cve_ids":["CVE-2021-41258"],"ecosystem":"Packagist","epss":0.00807,"exploited":false,"fixed_versions":["3.5.8"],"ghsa_id":"GHSA-cq58-r77c-5jjw","id":"tcs_01M5KF14PRE0A46YD7VRKGX2H2","modified_at":"2026-07-08T06:29:53.438171411Z","published_at":"2021-11-16T17:04:41Z","references":["https://osv.dev/vulnerability/GHSA-cq58-r77c-5jjw","https://github.com/getkirby/kirby/security/advisories/GHSA-cq58-r77c-5jjw","https://nvd.nist.gov/vuln/detail/CVE-2021-41258","https://github.com/getkirby/kirby/pull/3510","https://github.com/getkirby/kirby","https://github.com/getkirby/kirby/releases/tag/3.5.8"],"severity":{"label":"medium","score":5.4},"sources":[{"source":"osv","source_id":"GHSA-cq58-r77c-5jjw","url":"https://osv.dev/vulnerability/GHSA-cq58-r77c-5jjw"}],"summary":"Cross-site scripting (XSS) from image block content in the site frontend"}