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Vulnerability record · CVE-2026-27140 · published 8 April 2026

CVE-2026-27140: Golang go incorrect authorization vulnerability

Golang · 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.

8.8 CVSS 3.1 High EPSS 0.81% · top 44.9% CWE-863 · Incorrect authorizationCWE-641 · CWE-641
8.8CVSS 3.1 base score
0.81%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
24References
10 Sep 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://go.dev/cl/763768 Release Notes
https://go.dev/issue/78335 Issue Tracking
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU Mailing ListRelease Notes
https://pkg.go.dev/vuln/GO-2026-4871 Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:10217
https://access.redhat.com/errata/RHSA-2026:10219
https://access.redhat.com/errata/RHSA-2026:10704
https://access.redhat.com/errata/RHSA-2026:16021
https://access.redhat.com/errata/RHSA-2026:16024
https://access.redhat.com/errata/RHSA-2026:16494
https://access.redhat.com/errata/RHSA-2026:16497
https://access.redhat.com/errata/RHSA-2026:16498
https://access.redhat.com/errata/RHSA-2026:16694
https://access.redhat.com/errata/RHSA-2026:16697
https://access.redhat.com/errata/RHSA-2026:16698
https://access.redhat.com/errata/RHSA-2026:23246
https://access.redhat.com/errata/RHSA-2026:25182
https://access.redhat.com/errata/RHSA-2026:34099
https://access.redhat.com/errata/RHSA-2026:56854
https://access.redhat.com/errata/RHSA-2026:57408
https://access.redhat.com/errata/RHSA-2026:57545
https://access.redhat.com/security/cve/CVE-2026-27140
https://bugzilla.redhat.com/show_bug.cgi?id=2456341
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27140.json

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-27140), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.