{"action":"Upgrade mdex to 0.13.2 or later.","affected":[{"fixed":"0.13.2","introduced":"0.4.3"}],"component":"mdex","cve_ids":["CVE-2026-53426"],"ecosystem":"Hex","epss":0.0018,"exploited":false,"fixed_versions":["0.13.2"],"ghsa_id":"GHSA-923r-7vf4-5vw8","id":"tcs_01M5N858KQQS8N7S5Z7TC01BRW","modified_at":"2026-09-08T03:30:08.313555583Z","published_at":"2026-06-29T19:11:32.605Z","references":["https://osv.dev/vulnerability/EEF-CVE-2026-53426","https://github.com/leandrocp/mdex/security/advisories/GHSA-923r-7vf4-5vw8","https://cna.erlef.org/cves/CVE-2026-53426.html","https://github.com/leandrocp/mdex/commit/00fddf444220a1f1cc0af0a1cab6738804878387","https://hex.pm/packages/mdex"],"severity":{"label":"high","score":8.2},"sources":[{"source":"osv","source_id":"EEF-CVE-2026-53426","url":"https://osv.dev/vulnerability/EEF-CVE-2026-53426"},{"source":"nvd","source_id":"CVE-2026-53426","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53426"}],"summary":"Atom-table exhaustion denial-of-service via JSON parse_document in MDEx"}