CVE-2026-32874: UltraJSON has a Memory Leak parsing large integers allows DoS
(updated )
ujson 5.4.0 to 5.11.0 inclusive contain an accumulating memory leak in JSON parsing large (outside of the range [-2^63, 2^64 - 1]) integers.
References
- github.com/advisories/GHSA-wgvc-ghv9-3pmm
- github.com/ultrajson/ultrajson
- github.com/ultrajson/ultrajson/commit/4baeb950df780092bd3c89fc702a868e99a3a1d2
- github.com/ultrajson/ultrajson/releases/tag/5.12.0
- github.com/ultrajson/ultrajson/security/advisories/GHSA-wgvc-ghv9-3pmm
- nvd.nist.gov/vuln/detail/CVE-2026-32874
Code Behaviors & Features
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