Answer in brief
CVE-2026-27140 records a High severity (CVSS 8.8) vulnerability in Code execution vulnerability in SWIG code generation in cmd/go. The current sources do not mark it as known exploited. The current feed maps Go toolchain/cmd/go (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-27140 records a High severity (CVSS 8.8) vulnerability in Code execution vulnerability in SWIG code generation in cmd/go. The current sources do not mark it as known exploited. The current feed maps Go toolchain/cmd/go (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 8.8. 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 Go toolchain/cmd/go (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Go toolchain/cmd/gogeneric | >=0 <1.25.9 || >=1.26.0-0 <1.26.2 | 1.25.9, 1.26.2 |
Published upstream
Apr 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 9, 2026
SWIG file names containing 'cgo' and well-crafted payloads could lead to code smuggling and arbitrary code execution at build time due to trust layer bypass.
Quoted source text, attributed separately from HOL analysis.
CVSS is 8.8. 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 Go toolchain/cmd/go (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Go toolchain/cmd/gogeneric | >=0 <1.25.9 || >=1.26.0-0 <1.26.2 | 1.25.9, 1.26.2 |
Published upstream
Apr 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 9, 2026
SWIG file names containing 'cgo' and well-crafted payloads could lead to code smuggling and arbitrary code execution at build time due to trust layer bypass.
Quoted source text, attributed separately from HOL analysis.