CVE-2026-39819

MEDIUM

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 v3.1 Score

5.3
MEDIUM
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
NONE
Published: 5/7/2026Modified: 6/17/2026

Related Intelligence (1)

CRITICALAi

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CVE-2026-41089CVE-2020-1472
Rapid7

References (4)

https://go.dev/cl/763882Patchhttps://go.dev/issue/78584Issue Trackinghttps://groups.google.com/g/golang-announce/c/qcCIEXso47MIssue TrackingMailing Listhttps://pkg.go.dev/vuln/GO-2026-4978Vendor Advisory