{"action":"Upgrade linkify-it to 5.0.2 or later.","affected":[{"fixed":"5.0.2","introduced":"0"}],"component":"linkify-it","cve_ids":["CVE-2026-59887"],"ecosystem":"npm","epss":0.00467,"exploited":false,"fixed_versions":["5.0.2"],"ghsa_id":"GHSA-v245-v573-v5vm","id":"tcs_01M5KGAB3Z21TTK60F277DGR4Y","modified_at":"2026-09-10T03:51:12.054179363Z","published_at":"2026-07-21T19:06:09Z","references":["https://osv.dev/vulnerability/GHSA-v245-v573-v5vm","https://github.com/markdown-it/linkify-it/security/advisories/GHSA-v245-v573-v5vm","https://nvd.nist.gov/vuln/detail/CVE-2026-59887","https://github.com/markdown-it/linkify-it/commit/105e5d77f7d119871d2b2d86ed208568eb3e7ffe","https://github.com/markdown-it/linkify-it","https://github.com/markdown-it/linkify-it/releases/tag/5.0.2"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-v245-v573-v5vm","url":"https://osv.dev/vulnerability/GHSA-v245-v573-v5vm"}],"summary":"linkify-it: Quadratic-complexity DoS via the `mailto:` validator scan-loop on attacker text"}