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CVE-2025-66418 urllib3 allows an unbounded number of links in the decompression chain

🗓️ 05 Dec 2025 16:02:15Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 4 Views

urllib3 before 2.6.0 allows unlimited decompression links causing high memory use; fixed in 2.6.0.

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05 Aug 2026 03:32Current
6.7Medium risk
Vulners AI Score6.7
CVSS 48.9
4