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CVE-2026-71847 Ruby JSON: JSON::ResumableParser#partial_value dereferences a freed input buffer and crashes on truncated duplicate-key streams

🗓️ 07 Aug 2026 18:31:28Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 8 Views

CVE-2026-71847: Ruby JSON ResumableParser crashes on incomplete input with duplicate keys due to use after free; fixed in 2.21.2.

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08 Aug 2026 11:36Current
5.5Medium risk
Vulners AI Score5.5
CVSS 48.7
8