Answer in brief
CVE-2026-65651 records a Unknown severity vulnerability in temporalio/sqlparser deeply nested unary expressions can cause a fatal stack overflow during AST traversal. The current sources do not mark it as known exploited. The current feed maps Temporal Technologies, Inc./temporalio/sqlparser (generic), Temporal Technologies, Inc./Temporal Server (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Temporal Technologies, Inc./temporalio/sqlparser (generic), Temporal Technologies, Inc./Temporal Server (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Temporal Technologies, Inc./temporalio/sqlparsergeneric | >=0.0.0-20141206041240-1aae9baceee8 <0.0.0-20260721183058-0466b6b405ac | 0.0.0-20260721183058-0466b6b405ac |
| Temporal Technologies, Inc./Temporal Servergeneric | 0.10.0 || >=1.30.0 <1.30.7 || >=1.31.0 <1.31.3 | 1.30.7, 1.31.3 |
Published upstream
Sep 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 21, 2026
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.
Quoted source text, attributed separately from HOL analysis.