What is CVE-2026-31220?

CVE-2026-31220 is a critical-severity vulnerability in N/a, classified under Code Injection. CVSS score: 9.8/10. Published 2026-05-12.

How severe is CVE-2026-31220?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in N/a

CVE-2026-31220

PySyft (Syft Datasite/Server) versions 0.9.5 and earlier are vulnerable to remote code execution due to insufficient validation and sandboxing of user-submitted code. The system allows low-privileged users to submit Python functions (via @…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.003 (54.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

N/a — versions n/a

Weakness classification (CWE)

CWE-94 — Code Injection

References

cve@mitre.org
cve@mitre.org

Frequently asked questions

What is CVE-2026-31220?: CVE-2026-31220 is a critical-severity vulnerability in N/a, classified under Code Injection. CVSS score: 9.8/10. Published 2026-05-12.
How severe is CVE-2026-31220?: Critical severity. CVSS v3 base score is 9.8 out of 10.