UBUNTU-CVE-2026-39819
Advisory lineage Upstream: 1 Downstream: 0
Upstream
Published: 07 May 2026, 20:16
Last modified:20 May 2026, 16:25
Vulnerability Summary
Overall Risk (default)
low
21/100 CVSS Score
5.3 MEDIUM
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected
Timeline
07 May 2026, 20:16
Published
Vulnerability first disclosed
20 May 2026, 16:25
Last Modified
Vulnerability information updated
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.
CVSS Metrics
- v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
Affected Systems
- ubuntu•golang-1.10
all | all | all
- ubuntu•golang-1.13
all | all
- ubuntu•golang-1.14
all
- ubuntu•golang-1.16
all
- ubuntu•golang-1.17
all
- ubuntu•golang-1.18
all | all | all
- ubuntu•golang-1.20
all | all
- ubuntu•golang-1.21
all | all | all
- ubuntu•golang-1.22
all | all | all
- ubuntu•golang-1.23
all | all | all | all
- ubuntu•golang-1.24
all | all | all | all
- ubuntu•golang-1.25
all | all
- ubuntu•golang-1.6
all
- ubuntu•golang-1.8
all
- ubuntu•golang-1.9
all
References (8)
- https://ubuntu.com/security/CVE-2026-39819
- https://www.cve.org/CVERecord?id=CVE-2026-39819
- https://go-review.googlesource.com/c/go/+/763882
- https://github.com/golang/go/issues/78584
- https://groups.google.com/g/golang-announce/c/qcCIEXso47M
- https://go.dev/cl/763882
- https://go.dev/issue/78584
- https://pkg.go.dev/vuln/GO-2026-4978