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Fencer Vulns
medium 4.8

CVE-2023-31141 json

OpenSearch issue with fine-grained access control during extremely rare race conditions

published 2023-05-08 3 y ago modified 2026-06-17 4 mo ago also GHSA-g8xc-6mf7-h28h , EUVD-2023-1541

cvss
4.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

OpenSearch is open-source software suite for search, analytics, and observability applications. Prior to versions 1.3.10 and 2.7.0, there is an issue with the implementation of fine-grained access control rules (document-level security, field-level security and field masking) where they are not correctly applied to the queries during extremely rare race conditions potentially leading to incorrect access authorization. For this issue to be triggered, two concurrent requests need to land on the same instance exactly when query cache eviction happens, once every four hours. OpenSearch 1.3.10 and 2.7.0 contain a fix for this issue.

Patch / fix

  • maven org.opensearch.plugin:opensearch-security 1.3.10.0, 2.7.0.0
  • amazon opensearch 1.3.10, 2.7.0
  • amazon opensearch_security 1.3.10, 2.7.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.8 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
NVD 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 4.8 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.opensearch.plugin:opensearch-security
>=1.0.0, <1.3.10.0
>=2.0.0, <2.7.0.0
1.3.10.0
2.7.0.0

Affected products

  • opensearch-project security

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.