GHSA-v245-v573-v5vmPublished
linkify-it: Quadratic-complexity DoS via the `mailto:` validator scan-loop on attacker text
Explicit identifiers and source references
These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.
CVE-2026-59887 · Microsoft / collected KEV context
cve-program · CVE-2026-59887
- https://github.com/markdown-it/linkify-it/security/advisories/GHSA-v245-v573-v5vm
- https://github.com/markdown-it/linkify-it/commit/105e5d77f7d119871d2b2d86ed208568eb3e7ffe
- https://github.com/markdown-it/linkify-it/releases/tag/5.0.2
euvd · EUVD-2026-42321
- https://github.com/markdown-it/linkify-it/security/advisories/GHSA-v245-v573-v5vm
- https://github.com/markdown-it/linkify-it/commit/105e5d77f7d119871d2b2d86ed208568eb3e7ffe
- https://github.com/markdown-it/linkify-it/releases/tag/5.0.2
nvd · CVE-2026-59887
- https://github.com/markdown-it/linkify-it/commit/105e5d77f7d119871d2b2d86ed208568eb3e7ffe
- https://github.com/markdown-it/linkify-it/releases/tag/5.0.2
- https://github.com/markdown-it/linkify-it/security/advisories/GHSA-v245-v573-v5vm
osv · 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
Related operational evidence
Explicit CVE identifiers- linkify-it is a links recognition library with full Unicode support. Prior to 5.0.2, the mailto: schema validator used by .test() and .match() can be invoked at every mailto: occurrence and scan the remaining input through src_email_name in… · Advisory content revised · 1 Nov 2026
- Jira Service Management Data Center: DoS (Denial of Service) linkify-it Dependency (CVE-2026-59887) · Security advisory · 15 Sep 2026