Answer in brief
CVE-2026-16651 records a High severity (CVSS 8.7) vulnerability in temporalio/sqlparser malformed MySQL version comments can cause a panic. The current sources do not mark it as known exploited. The current feed maps Temporal Technologies, Inc./github.com/temporalio/sqlparser (generic), Temporal Technologies, Inc./go.temporal.io/server (generic), 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.
CVSS is 8.7. 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./github.com/temporalio/sqlparser (generic), Temporal Technologies, Inc./go.temporal.io/server (generic), 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./github.com/temporalio/sqlparsergeneric | >=0.0.0-20180604150908-b055e9c9b4fa <0.0.0-20260721183040-74181ffcbaaf | 0.0.0-20260721183040-74181ffcbaaf |
| Temporal Technologies, Inc./go.temporal.io/servergeneric | >=1.29.0 <=1.29.7 || >=1.30.0 <1.30.7 || >=1.31.0 <1.31.3 | 1.30.7, 1.31.3 |
| Temporal Technologies, Inc./temporalio/sqlparsergeneric | >=0.0.0-20180604150908-b055e9c9b4fa <0.0.0-20260721183040-74181ffcbaaf | 0.0.0-20260721183040-74181ffcbaaf |
| Temporal Technologies, Inc./Temporal Servergeneric | 1.29.0 || >=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 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 21, 2026
temporalio/sqlparser can panic when Parse, ParseStrictDDL, or ParseNext processes a MySQL version comment whose contents are empty or consist only of one to five decimal digits. ExtractMysqlComment does not check the -1 result returned by strings.IndexFunc before using it as a slice boundary. The resulting Go runtime panic propagates unless the caller recovers it on the parsing goroutine, so applications that parse attacker-controlled SQL can terminate. Temporal Server exposes the affected parser through ListWorkers. When that API is enabled, an authenticated caller with namespace read permission can submit a malformed query that terminates the receiving Matching process. 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.