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Advisory record · GHSA-8ggj-j522-h5qf

Apache Polaris has an Improper Input Validation Issue

CVSS 9.4 CriticalCriticalEPSS 0.0036 · 29th percentile

Critical, because:

  • CVSS score 9.4: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 4 May 2026, 18:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.apache.polaris:polaris-runtime-serviceMaven<1.4.11.4.1
Identifiers
GHSA-8ggj-j522-h5qf · CVE-2026-42809
Weakness (CWE)
CWE-20 · CWE-862
Tags
Published
4 May 2026
Updated
8 May 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Apache Polaris (polaris-runtime-service, Maven) versions before 1.4.1 can issue broad temporary storage credentials during staged table creation before the table location is validated. An attacker who can call the stage-create endpoint and request credential vending can supply a custom location they choose, so the credentials are scoped to an attacker-chosen target. The source gives few details on the exact access gained. Upgrade to version 1.4.1 or later.

Written 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
9.4 Critical 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CNA (apache)
  • CISA KEV Not listed.
  • EPSS 0.0036, the 29th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:20 UTC First seen by agentprime
  2. 31 Oct 2026, 14:20 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.