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Name
CVE-2026-39819
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.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
https://go.dev/issue/78584Issue Tracking
https://pkg.go.dev/vuln/GO-2026-4978Vendor Advisory
Analysis#
Vulnerability Ratings#
5.3
CVSSv31
5.3
CVSSv31
NaN
other
Others affected components#
Name
Project
Project Version
Version
Status
openwrt
master
1.24.13-r1
Exploitable
openwrt
master
1.26.4-r1
Not Affected
openwrt
openwrt-25.12
1.24.13-r1
Exploitable
openwrt
openwrt-25.12
1.26.4-r1
Not Affected
yocto
kirkstone
1.17.13
Exploitable
yocto
kirkstone
1.17.13
Exploitable
yocto
master
1.26.4
Not Affected
yocto
master
1.26.4
Not Affected
Resolved with patches#
go (yocto:scarthgap)
#
Title
Author
Resolve
1
cmd/go: use MkdirTemp to create temp directory for "go bug"
Damien Neil <dneil@google.com>
CVE-2026-39819