cmd-go up to 1.25.8/1.26.1 on Go SWIG File Parser trust boundary violation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k1.00

Summaryinfo

A vulnerability, which was classified as critical, was found in cmd-go up to 1.25.8/1.26.1 on Go. This issue affects some unknown processing of the component SWIG File Parser. Executing a manipulation can lead to trust boundary violation. This vulnerability appears as CVE-2026-27140. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in cmd-go up to 1.25.8/1.26.1 on Go and classified as critical. This vulnerability affects some unknown functionality of the component SWIG File Parser. The manipulation with an unknown input leads to a trust boundary violation vulnerability. The CWE definition for the vulnerability is CWE-501. The product mixes trusted and untrusted data in the same data structure or structured message. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

This vulnerability was named CVE-2026-27140 since 02/17/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 1.25.9 or 1.26.2 eliminates this vulnerability.

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Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Trust boundary violation
CWE: CWE-501
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: cmd-go 1.25.9/1.26.2

Timelineinfo

02/17/2026 CVE reserved
04/08/2026 +49 days Advisory disclosed
04/08/2026 +0 days VulDB entry created
04/08/2026 +0 days VulDB entry last update

Sourcesinfo

Status: Confirmed

CVE: CVE-2026-27140 (🔒)
GCVE (CVE): GCVE-0-2026-27140
GCVE (VulDB): GCVE-100-356008

Entryinfo

Created: 04/08/2026 08:01
Changes: 04/08/2026 08:01 (52)
Complete: 🔍
Cache ID: 216:773:103

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