CVE-2026-27140: CWE-501: Trust Boundary Violation in Go toolchain cmd/go
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.
AI Analysis
Technical Summary
This vulnerability involves a trust boundary violation (CWE-501) in the Go toolchain's cmd/go. Specifically, SWIG file names that include 'cgo' and carefully constructed payloads can lead to code smuggling, enabling arbitrary code execution at build time. The issue affects Go toolchain versions from 0 through 1.26.0-0. No official remediation or patch information is currently available, and no CVSS score has been assigned.
Potential Impact
If exploited, this vulnerability could allow an attacker to execute arbitrary code during the build process by bypassing trust boundaries in the Go toolchain. This could compromise the build environment and potentially lead to further system compromise. However, no known exploits in the wild have been reported to date.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should exercise caution when building projects involving SWIG files with 'cgo' in their names and avoid untrusted code sources. Monitor official Go toolchain advisories for updates.
CVE-2026-27140: CWE-501: Trust Boundary Violation in Go toolchain cmd/go
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a trust boundary violation (CWE-501) in the Go toolchain's cmd/go. Specifically, SWIG file names that include 'cgo' and carefully constructed payloads can lead to code smuggling, enabling arbitrary code execution at build time. The issue affects Go toolchain versions from 0 through 1.26.0-0. No official remediation or patch information is currently available, and no CVSS score has been assigned.
Potential Impact
If exploited, this vulnerability could allow an attacker to execute arbitrary code during the build process by bypassing trust boundaries in the Go toolchain. This could compromise the build environment and potentially lead to further system compromise. However, no known exploits in the wild have been reported to date.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should exercise caution when building projects involving SWIG files with 'cgo' in their names and avoid untrusted code sources. Monitor official Go toolchain advisories for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Go
- Date Reserved
- 2026-02-17T19:57:28.435Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d5da2a43e2781badfbe636
Added to database: 4/8/2026, 4:31:38 AM
Last enriched: 4/8/2026, 4:47:33 AM
Last updated: 4/8/2026, 7:41:36 AM
Views: 3
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