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PYSEC-2026-1056 Potential double free of buffer during string decoding

🗓️ 06 Jul 2026 08:03:30Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 3 Views

UltraJSON may double free a buffer during string decoding on reallocation error; upgrade to 5.4.0.

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07 Jul 2026 11:46Current
6.8Medium risk
Vulners AI Score6.8
CVSS 3.15.9
EPSS0.01694
3