CVE-2026-39819

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://go.dev/cl/763882	Patch
https://go.dev/issue/78584	Issue Tracking
https://groups.google.com/g/golang-announce/c/qcCIEXso47M	Issue Tracking Mailing List
https://pkg.go.dev/vuln/GO-2026-4978	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:golang:go::::::::
	cpe:2.3:a:golang:go::::::::

History

13 May 2026, 15:05

Type	Values Removed	Values Added
CWE		CWE-59
References	~~() https://go.dev/cl/763882 -~~	() https://go.dev/cl/763882 - Patch
References	~~() https://go.dev/issue/78584 -~~	() https://go.dev/issue/78584 - Issue Tracking
References	~~() https://groups.google.com/g/golang-announce/c/qcCIEXso47M -~~	() https://groups.google.com/g/golang-announce/c/qcCIEXso47M - Issue Tracking, Mailing List
References	~~() https://pkg.go.dev/vuln/GO-2026-4978 -~~	() https://pkg.go.dev/vuln/GO-2026-4978 - Vendor Advisory
CPE		cpe:2.3:a:golang:go::::::::
First Time		Golang Golang go

08 May 2026, 22:16

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.3

07 May 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-07 20:16

Updated : 2026-05-13 15:05

NVD link : CVE-2026-39819

Mitre link : CVE-2026-39819

CVE.ORG link : CVE-2026-39819

JSON object : View

Products Affected

golang

go

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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