{"id":"CVE-2026-65651","title":"temporalio/sqlparser accepts SQL containing deeply nested unary expressions and can return a correspondingly deep abstract syntax tree without enforcing an applicable nesting limit","summary":"temporalio/sqlparser accepts SQL containing deeply nested unary expressions and can return a correspondingly deep abstract syntax tree without enforcing an applicable nesting limit. The library's String and Walk operations recursively tr…","severity":"high","cvss":8.7,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","cwe":["CWE-674"],"vendor":"Temporal Technologies, Inc.","product":"github.com/temporalio/sqlparser","affected":["github.com/temporalio/sqlparser >= 0.0.0-20141206041240-1aae9baceee8 < 0.0.0-20260721183058-0466b6b405ac","go.temporal.io/server >= 0.10.0 <= 1.29.7","go.temporal.io/server >= 1.30.0 < 1.30.7","go.temporal.io/server >= 1.31.0 < 1.31.3"],"published":"2026-09-21","updated":"2026-09-21","sourceUpdated":"2026-09-21T16:17:10.910","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-65651","references":[{"url":"https://github.com/temporalio/sqlparser/commit/0466b6b405accfaa781e4bef417933efc18bcaef","label":"security@temporal.io"},{"url":"https://github.com/temporalio/sqlparser/commit/1aae9baceee8e48525da8f56b07bf6a5ca7eb147","label":"security@temporal.io"},{"url":"https://github.com/temporalio/sqlparser/pull/6","label":"security@temporal.io"},{"url":"https://github.com/temporalio/sqlparser/pull/7","label":"security@temporal.io"},{"url":"https://github.com/temporalio/sqlparser/tree/v0.1.0","label":"security@temporal.io"},{"url":"https://github.com/temporalio/temporal/blob/v0.10.0/common/archiver/filestore/queryParser.go#L77-L132","label":"security@temporal.io"},{"url":"https://github.com/temporalio/temporal/pull/11202","label":"security@temporal.io"},{"url":"https://github.com/temporalio/temporal/releases/tag/v1.30.7","label":"security@temporal.io"},{"url":"https://github.com/temporalio/temporal/releases/tag/v1.31.3","label":"security@temporal.io"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-21T15:30:53.004421Z"},"cvssSource":"cna","ingestedAt":"2026-09-21T12:36:35.287Z","slug":"CVE-2026-65651","body":"## Overview\n\ntemporalio/sqlparser accepts SQL containing deeply nested unary expressions and can return a correspondingly deep abstract syntax tree without enforcing an applicable nesting limit. The library's String and Walk operations recursively traverse that tree. An application that parses attacker-controlled SQL and later formats or walks the returned tree can encounter a runtime-fatal Go stack overflow that terminates the process; Go panic recovery cannot contain this condition. Temporal Server passes caller-controlled query input through the affected parser in archival, visibility, and worker-query paths. In affected validation paths, the Server recursively formats an invalid expression while constructing an error. In a supported authenticated deployment, a caller with namespace read permission can terminate the receiving Frontend or Matching process. The dynamically confirmed ListWorkers route additionally requires at least one retained worker heartbeat. Repeated requests can sustain a denial of service. The issue affects availability only; no confidentiality or integrity impact was identified.\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,"exploitation":0,"ransomware":0},"changes":[]}