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VULNERABILITIES

CVE-2026-39819 Details

Description

The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
CNA: CISA-ADPCVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://go.dev/cl/763882 [email protected]Patch
https://go.dev/issue/78584 [email protected]Issue Tracking
https://groups.google.com/g/golang-announce/c/qcCIEXso47M [email protected]Issue TrackingMailing List
https://pkg.go.dev/vuln/GO-2026-4978 [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-59Improper Link Resolution Before File Access ('Link Following')[email protected]

Affected Products

ProductVersions
golang go
< 1.25.10
>= 1.26.0, < 1.26.3

CPE

  • cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-39819
NVD Published Date:
May 7, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-39819 Details - Not Deferred