CVE-2026-71437
python3-jupyterlab-jupytext: python-jupytext: Mermaid: Prototype pollution vulnerability allows potential arbitrary code execution
CVE-2026-71437 is fixed in 4 products on 1 platform, first by FEDORA-2026-3942AB86FD, released October 5, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
n/a
low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0050
43rd percentile
python-jupytext: Mermaid: Prototype pollution vulnerability allows potential arbitrary code execution
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-jupytext · Fedora 43 | 1.19.6-1.fc43 | FEDORA-2026-3942AB86FD | Oct 5, 2026 |
| python-jupytext-doc · Fedora 43 | 1.19.6-1.fc43 | FEDORA-2026-3942AB86FD | Oct 5, 2026 |
| python3-jupyterlab-jupytext · Fedora 43 | 1.19.6-1.fc43 | FEDORA-2026-3942AB86FD | Oct 5, 2026 |
| python3-jupytext · Fedora 43 | 1.19.6-1.fc43 | FEDORA-2026-3942AB86FD | Oct 5, 2026 |
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