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Advisory record · GHSA-q63x-9pfm-mjx4

Feast vulnerable to unsafe deserialization RCE in registry server via UDF proto

CVSS 9.3 CriticalCriticalEPSS 0.014 · 72nd percentile

Critical, because:

  • CVSS score 9.3: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 24 Jun 2026, 18:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
feastPyPI<0.63.00.63.0
Identifiers
GHSA-q63x-9pfm-mjx4 · CVE-2026-56121
Weakness (CWE)
CWE-502
Tags
Published
24 Jun 2026
Updated
3 Nov 2026

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.3 Critical 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CNA (VulnCheck)
  • CISA KEV Not listed.
  • EPSS 0.014, the 72nd percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 24 Jun 2026, 14:49 UTC Confirmed by the CVE List
  2. 24 Jun 2026, 18:32 UTC Confirmed by GitHub Advisory Database
  3. 3 Nov 2026, 21:31 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.