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Advisory record · GHSA-2rjv-cv85-xhgm

OpenSearch unauthorized data access on fields protected by field level security if field is a member of an object

CVSS 5.7 Medium

Published by the GitHub Advisory Database at 1 Aug 2025, 18:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.opensearch.plugin:opensearch-securityMaven<2.19.3.02.19.3.0
Identifiers
GHSA-2rjv-cv85-xhgm
Weakness (CWE)
CWE-200
Tags
Published
1 Aug 2025
Updated
1 Aug 2025

Machine-written summary

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

The opensearch-security plugin (Maven org.opensearch.plugin:opensearch-security) before 2.19.3.0 does not properly apply Field Level Security to fields nested inside JSON objects. When an FLS exclusion is set on an object, the object is removed from search and get results, but its member fields remain searchable. An attacker with search access can use range queries to reconstruct the hidden field contents. Upgrade to 2.19.3.0 or later. As a workaround, add an exclusion rule for the object's members (for example, object.*) alongside the existing exclusion.

Written 7 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
5.7 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 15:10 UTC First seen by agentprime
  2. 31 Oct 2026, 15:10 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.