CVE-2026-63393

high

Description

OpenSearch SQL supports querying OpenSearch data using SQL and Piped Processing Language. In the 2.x line from 2.8.0.0 until 2.19.6.0, and the 3.x line prior to 3.7.0.0, a remote authenticated user with basic read/search permissions can provide a crafted `cursor` parameter to the `plugins/sql` endpoint and trigger unsafe deserialization of untrusted data, resulting in arbitrary code execution on the server. This issue is fixed in repository releases 2.19.6.0 and 3.7.0.0.

References

https://github.com/opensearch-project/sql/security/advisories/GHSA-r8cv-xvqm-4qj4

https://github.com/opensearch-project/sql/releases/tag/3.7.0.0

https://github.com/opensearch-project/sql/releases/tag/2.19.6.0

https://github.com/opensearch-project/sql/pull/5572

https://github.com/opensearch-project/sql/pull/5469

https://github.com/opensearch-project/sql/commit/9ab50384d3ad571a14211415fba2f6d26d4c80db

https://github.com/opensearch-project/sql/commit/402a284f1dff3545236480b67f860aa93fb667de

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-114543

Details

Source: Mitre, NVD

Published: 2026-10-30

Updated: 2026-10-30

Risk Information

CVSS v2

Base Score: 6.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.8

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base Score: 8.7

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Severity: High

EPSS

EPSS: 0.00499