{"affected":[{"product":"sql","source":"CNA: GitHub_M","vendor":"opensearch-project","versions":[{"status":"affected","version":">= 2.8.0.0, < 2.19.6.0"},{"status":"affected","version":">= 3.0.0.0-alpha1, < 3.7.0.0"}]}],"cveId":"CVE-2026-63393","cwes":["CWE-502"],"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.","epss":{"date":"2026-11-02","percentile":0.42783,"score":0.00499},"exploits":[],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: GitHub_M","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","version":"4.0"}],"modifiedAt":1793630888509,"publishedAt":1793398925735,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/opensearch-project/sql/security/advisories/GHSA-r8cv-xvqm-4qj4"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/opensearch-project/sql/pull/5469"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/opensearch-project/sql/pull/5572"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/opensearch-project/sql/commit/402a284f1dff3545236480b67f860aa93fb667de"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/opensearch-project/sql/commit/9ab50384d3ad571a14211415fba2f6d26d4c80db"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/opensearch-project/sql/releases/tag/2.19.6.0"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/opensearch-project/sql/releases/tag/3.7.0.0"}],"remediation":[],"revision":"b4473a5b6b9ce90145c86247606f9b7c7ca69173ab418647574481282b373997","sources":[{"modifiedAt":1793630888509,"name":"CNA: GitHub_M","retrievedAt":1793632148285,"url":"https://www.cve.org/CVERecord?id=CVE-2026-63393"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793632150706,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-63393"}],"ssvc":{"assessedAt":1793630878581,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"OpenSearch SQL plugin: Unsafe cursor deserialization permits server code execution","updatedAt":1793632150706}