{"action":"Upgrade mdex_native to 0.2.3 or later.","affected":[{"fixed":"0.2.3","introduced":"0.1.0"}],"component":"mdex_native","cve_ids":["CVE-2026-53427"],"ecosystem":"Hex","epss":0.00688,"exploited":false,"fixed_versions":["0.2.3"],"ghsa_id":"GHSA-v664-pmxr-mxxx","id":"tcs_01M5N858YHDHWA54FCQNGT5MPD","modified_at":"2026-09-08T03:30:05.104633525Z","published_at":"2026-06-29T18:50:17.185Z","references":["https://osv.dev/vulnerability/EEF-CVE-2026-53427","https://github.com/leandrocp/mdex_native/security/advisories/GHSA-v664-pmxr-mxxx","https://cna.erlef.org/cves/CVE-2026-53427.html","https://github.com/leandrocp/mdex_native/commit/798a363b4339f6f7162ec8437c4c9f9b5ae6fbf3","https://hex.pm/packages/mdex","https://hex.pm/packages/mdex_native"],"severity":{"label":"low","score":2.3},"sources":[{"source":"osv","source_id":"EEF-CVE-2026-53427#Hex/mdex_native","url":"https://osv.dev/vulnerability/EEF-CVE-2026-53427"},{"source":"nvd","source_id":"CVE-2026-53427","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53427"}],"summary":"Cross-site scripting in MDEx via unescaped highlight_lines_class code-fence attribute"}