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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-65651

temporalio/sqlparser deeply nested unary expressions can cause a fatal stack overflow during AST traversal

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Status
Published
Published
Updated
Assigning organization
Temporal

Description

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 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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Temporal Technologies, Inc. temporalio/sqlparser

Default version status: unaffected

  • 0.0.0-20141206041240-1aae9baceee8 to < 0.0.0-20260721183058-0466b6b405acaffected

Temporal Technologies, Inc. Temporal Server

Default version status: unaffected

  • 0.0.0 to < 0.10.0unknown
  • 0.10.0 to ≤ 1.29.7affected
  • 1.30.0 to < 1.30.7affected
  • 1.31.0 to < 1.31.3affected

References