CVE-2026-59887
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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 lib/re.mjs, causing O(n^2) CPU consumption on crafted user text. This issue is fixed in version 5.0.2.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| markdown-it | linkify-it | < 5.0.2 | affected |
Weaknesses
- CWE-407: CWE-407: Inefficient Algorithmic Complexity
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: yes
- Technical Impact: partial
Additional References
References
- 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
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