CVE-2026-63393: high-severity vulnerability in opensearch-project sql
OpenSearch SQL plugin: Unsafe cursor deserialization permits server code execution
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.5%
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.
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
Affected products
opensearch-project · sqlReferences
https://github.com/opensearch-project/sql/commit/402a284f1dff3545236480b67f860aa93fb667dehttps://github.com/opensearch-project/sql/commit/9ab50384d3ad571a14211415fba2f6d26d4c80dbhttps://github.com/opensearch-project/sql/pull/5469https://github.com/opensearch-project/sql/pull/5572https://github.com/opensearch-project/sql/releases/tag/2.19.6.0https://github.com/opensearch-project/sql/releases/tag/3.7.0.0https://github.com/opensearch-project/sql/security/advisories/GHSA-r8cv-xvqm-4qj4