PyPI/ujson CVE-2026-32875: high 7.5, EPSS 0.48%
UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Versions 5.10 through 5.11.0 are vulnerable to buffer overflow or infinite loop through large indent handl
Action: Upgrade ujson to 5.12.0 or later.
pip install ujson==5.12.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 5.1.0 | 5.12.0 | - |
Fixed versions
| 5.12.0 |
Sources
- osv: PYSEC-2026-2292
- https://access.redhat.com/security/cve/CVE-2026-32875
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32875.json
- https://bugzilla.redhat.com/show_bug.cgi?id=2449400
- https://github.com/ultrajson/ultrajson/issues/700
- https://github.com/ultrajson/ultrajson/commit/486bd4553dc471a1de11613bc7347a6b318e37ea
- https://github.com/ultrajson/ultrajson/security/advisories/GHSA-c8rr-9gxc-jprv
CVE-2026-32875 · published · modified · JSON