PyPI/ujson CVE-2026-32874: high 7.5, EPSS 0.50%
UltraJSON has a Memory Leak parsing large integers allows DoS
Action: Upgrade ujson to 5.12.0 or later.
pip install ujson==5.12.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 5.4.0 | 5.12.0 | - |
Fixed versions
| 5.12.0 |
Sources
- osv: GHSA-wgvc-ghv9-3pmm
- https://github.com/ultrajson/ultrajson/security/advisories/GHSA-wgvc-ghv9-3pmm
- https://nvd.nist.gov/vuln/detail/CVE-2026-32874
- https://github.com/ultrajson/ultrajson/commit/4baeb950df780092bd3c89fc702a868e99a3a1d2
- https://github.com/ultrajson/ultrajson
- https://github.com/ultrajson/ultrajson/releases/tag/5.12.0
CVE-2026-32874 · published · modified · JSON