{"id":"CVE-2026-63393","title":"OpenSearch SQL plugin: Unsafe cursor deserialization permits server code execution","summary":"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 …","severity":"high","cvss":8.7,"cvssVector":"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","cvssSource":"cna","cwe":["CWE-502"],"vendor":"opensearch-project","product":"sql","affected":["sql >= 2.8.0.0, < 2.19.6.0","sql >= 3.0.0.0-alpha1, < 3.7.0.0"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-11-02T14:47:58.581053Z"},"published":"2026-10-30","updated":"2026-11-02","sourceUpdated":"2026-11-02T14:48:08.509Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-63393","references":[{"url":"https://github.com/opensearch-project/sql/security/advisories/GHSA-r8cv-xvqm-4qj4","label":"https://github.com/opensearch-project/sql/security/advisories/GHSA-r8cv-xvqm-4qj4"},{"url":"https://github.com/opensearch-project/sql/pull/5469","label":"https://github.com/opensearch-project/sql/pull/5469"},{"url":"https://github.com/opensearch-project/sql/pull/5572","label":"https://github.com/opensearch-project/sql/pull/5572"},{"url":"https://github.com/opensearch-project/sql/commit/402a284f1dff3545236480b67f860aa93fb667de","label":"https://github.com/opensearch-project/sql/commit/402a284f1dff3545236480b67f860aa93fb667de"},{"url":"https://github.com/opensearch-project/sql/commit/9ab50384d3ad571a14211415fba2f6d26d4c80db","label":"https://github.com/opensearch-project/sql/commit/9ab50384d3ad571a14211415fba2f6d26d4c80db"},{"url":"https://github.com/opensearch-project/sql/releases/tag/2.19.6.0","label":"https://github.com/opensearch-project/sql/releases/tag/2.19.6.0"},{"url":"https://github.com/opensearch-project/sql/releases/tag/3.7.0.0","label":"https://github.com/opensearch-project/sql/releases/tag/3.7.0.0"}],"tags":["cve.org"],"epss":0.00499,"epssPercentile":0.4303,"ingestedAt":"2026-11-05T19:30:42.670Z","slug":"CVE-2026-63393","body":"## Overview\n\nOpenSearch 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.\n\n## Affected\n\n- `sql >= 2.8.0.0, < 2.19.6.0`\n- `sql >= 3.0.0.0-alpha1, < 3.7.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":47.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}