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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 @sy.syft_function()) for remote execution on the server. While a code approval mechanism exists, the submitted code undergoes no security checks for dangerous operations (e.g., file access, command execution). Once approved, the code is executed within the serve
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:670d0d3156a08a1e67543509959ec02aaf14cd2b77ab2ffe5407b82bcda5f087
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5fe858592b808d8df35584cc35e02c2af6f972e7055613b0c11179bd23c7416d · sha256:300df4995c6af761… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-94","description":"CWE-94 Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5fe858592b808d8df35584cc35e02c2af6f972e7055613b0c11179bd23c7416d · sha256:300df4995c6af761… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5fe858592b808d8df35584cc35e02c2af6f972e7055613b0c11179bd23c7416d · sha256:300df4995c6af761… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5fe858592b808d8df35584cc35e02c2af6f972e7055613b0c11179bd23c7416d · sha256:300df4995c6af761… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5fe858592b808d8df35584cc35e02c2af6f972e7055613b0c11179bd23c7416d · sha256:300df4995c6af761… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-94","description":"CWE-94 Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5fe858592b808d8df35584cc35e02c2af6f972e7055613b0c11179bd23c7416d · sha256:300df4995c6af761… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

2 source assertions
{"url":"https://github.com/OpenMined/PySyft"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5fe858592b808d8df35584cc35e02c2af6f972e7055613b0c11179bd23c7416d · sha256:300df4995c6af761… · /containers/cna/references/0
{"url":"https://www.notion.so/CVE-2026-31220-35d1e1393188814186b9e00114a8aba7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5fe858592b808d8df35584cc35e02c2af6f972e7055613b0c11179bd23c7416d · sha256:300df4995c6af761… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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