UpHeron
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Servers and applications

CVE-2026-63140

Reachable Assertion (CWE-617) in Elasticsearch can lead to denial of service via Input Data Manipulation (CAPEC-153). A specially crafted search request containing a null value in a specific query clause causes an internal assertion to be raised during query parsing. Because Elasticsearch treats assertion failures as fatal errors, this terminates the affected node process. A low-privileged…

Severity
Medium 6.5
Published
21 Jul 2026
Last changed
7 Aug 2026
Added to UpHeron
21 Oct 2026
Fixed in
8.19.19, 9.3.8, 9.4.4
Sources
NVD

Affected software

SoftwareAffected versions
ElasticsearchServers and applications · cpe:a:elastic:elasticsearch
  • From 8.0.0 before 8.19.19
  • From 9.0.0 before 9.3.8
  • From 9.4.0 before 9.4.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-63140
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-63140