AUGUST 24, 2026
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Case File

CVE-2026-59887

HIGH · CVSS 7.5 EPSS 0.34% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-08 · Last synced 2026-08-07

CyberRota Analysis

AI-Generated

The linkify-it library, prior to version 5.0.2, is vulnerable to a denial-of-service attack due to an inefficient mailto: schema validator that can lead to O(n^2) CPU consumption when processing specially crafted input. This vulnerability can be exploited to degrade application performance significantly, making it a critical concern for developers and organizations utilizing this library in their projects. Users of affected versions should prioritize upgrading to version 5.0.2 or later to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

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CVE
CVE-2026-59887
Severity
HIGH
CVSS
7.5
EPSS
0.34%

Original NVD Description

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.