CVE-2026-271408.8HighCWE-501

CVE-2026-27140: Code execution vulnerability in SWIG code generation in cmd/go

Go toolchain · cmd/go

Vendor fix available · Affected: Go toolchain cmd/go · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.7%probability of exploitation in the next 30 days

52nd percentile

050100

Higher than 52% of scored CVEs

8.8HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Go toolchain · cmd/gobefore 1.25.9; from 1.26.0-0 before 1.26.2

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Trust Boundary Violation · Other weaknesses
Vendor: Go toolchain
Published: April 2026
Band: Unlikely (under 1%), April 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-27140 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References

12 more references are in the CVE record.