CVE-2026-103008

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{"bugzilla": {"description": "elasticsearch: elasticsearch: Denial of Service via uncontrolled recursion in scripted runtime fields", "id": "2547117", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547117"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to Denial of Service via a specially crafted request that causes the server to construct and process a deeply nested data structure with no bound on recursion depth. Elasticsearch contains an uncontrolled recursion weakness in how it builds and serializes geometry values produced by scripted runtime fields. Unlike geometry supplied as text, which is subject to a nesting-depth limit, geometry constructed from a script's output is not bounded. An authenticated user with read access to a single index can submit a request defining such a field with a script that produces a deeply nested structure. Processing this request recurses past the available stack space, causing the affected node to terminate. The node does not recover automatically on all deployments and may require manual intervention to restore service.", "A flaw was found in Elasticsearch. An authenticated user with read access to an index can trigger unbounded recursion by submitting a request defining a scripted runtime field that generates deeply nested geometry structures. Because the server does not enforce a recursion depth limit when processing these scripted geometry values, memory stack space is exhausted. This causes the affected node to crash unexpectedly, resulting in a Denial of Service (DoS) that may require manual intervention to recover."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-103008", "package_state": [{"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-feature-server-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Not affected", "package_name": "quay/quay-rhel8", "product_name": "Red Hat Quay 3"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Not affected", "package_name": "quay/quay-rhel9", "product_name": "Red Hat Quay 3"}], "public_date": "2026-10-06T19:31:51Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-103008\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-103008\nhttps://discuss.elastic.co/t/elasticsearch-8-19-23-9-4-8-9-5-5-security-update-esa-2026-198/390872"], "statement": "This vulnerability is evaluated as a Moderate severity impact because triggering the failure requires an authenticated user with existing index read permissions, and exploitation is limited strictly to service interruption without compromising confidentiality or integrity. In affected deployments, an authorized client can formulate a search query containing scripted fields that produce excessively nested geometric objects. Processing these recursive geometries exhausts stack space and forces the node process to terminate, requiring administrative intervention to recover the affected instance.", "threat_severity": "Moderate"}

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