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CVE-2026-59887

🗓️ 19 Aug 2026 18:16:02Reported by redhat.comType 
redhatcve
 redhatcve🔗 access.redhat.com👁 14 Views

linkify-it mailto validator DoS via crafted input causing excessive CPU consumption.

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Refs
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IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities in watsonx.data
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IBM Security Bulletins		Security Bulletin: IBM App Connect Enterprise is vulnerable to multiple vulnerabilities due to linkify-it and httpcore5 (CVE-2026-59887, CVE-2026-54428 & CVE-2026-54399)
31 Jul 202614:58
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IBM Security Bulletins		Security Bulletin: Platform Navigator and Automation Assets in IBM Cloud Pak for Integration are vulnerable to multiple vulnerabilitie
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IBM Security Bulletins		Security Bulletin: linkify-it-5.0.1.tgz security vulnerability in Content Cortex(CCx) reported for GenAI ICN Plugin
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IBM Security Bulletins		Security Bulletin: Cyber Fraud includes components with multiple known vulnerabilities
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IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in IBM Observability with Instana (OnPrem)
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IBM Security Bulletins		Security Bulletin: IBM Decision Intelligence Client Managed Software (Formerly Known as IBM Automation Decision Services) for July 2026- Multiple CVEs addressed
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IBM Security Bulletins		Security Bulletin: IBM Quantum Safe Explorer is affected by multiple vulnerabilities
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8 Jul 202615:58
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21 Sep 2026 10:38Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.17.5
EPSS0.00644
SSVC
CWE-1333
linkify-itDenial of ServiceCPU consumptionmailto validatorcrafted inputno mitigationremote attack
14