CVE-2026-39817

EUVD-2026-28421
The "go tool pack" subcommand (usually used only by the compiler as an internal tool with known-good inputs) does not sanitize output filenames. Extracting a malicious archive file with the "pack" subcommand can write files to arbitrary locations on the filesystem.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.9 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 6%
Affected Products (NVD)
VendorProductVersion
golanggo
𝑥
< 1.25.10
golanggo
1.26.0 ≤
𝑥
< 1.26.3
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
golang-1.15
bullseye
postponed
golang-1.19
bookworm
no-dsa
golang-1.24
trixie
no-dsa
golang-1.25
forky
1.25.11-1
fixed
sid
1.25.11-1
fixed
golang-1.26
forky
1.26.4-1
fixed
sid
1.26.4-1
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
golang
Amazon Linux 2
0:1.25.10-1.amzn2.0.1
fixed
Amazon Linux 2023
0:1.25.10-1.amzn2023.0.1
fixed
golang-bin
Amazon Linux 2
0:1.25.10-1.amzn2.0.1
fixed
Amazon Linux 2023
0:1.25.10-1.amzn2023.0.1
fixed
golang-docs
Amazon Linux 2
0:1.25.10-1.amzn2.0.1
fixed
Amazon Linux 2023
0:1.25.10-1.amzn2023.0.1
fixed
golang-misc
Amazon Linux 2
0:1.25.10-1.amzn2.0.1
fixed
Amazon Linux 2023
0:1.25.10-1.amzn2023.0.1
fixed
golang-shared
Amazon Linux 2
0:1.25.10-1.amzn2.0.1
fixed
Amazon Linux 2023
0:1.25.10-1.amzn2023.0.1
fixed
golang-src
Amazon Linux 2
0:1.25.10-1.amzn2.0.1
fixed
Amazon Linux 2023
0:1.25.10-1.amzn2023.0.1
fixed
golang-tests
Amazon Linux 2
0:1.25.10-1.amzn2.0.1
fixed
Amazon Linux 2023
0:1.25.10-1.amzn2023.0.1
fixed
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://go.dev/cl/767520
https://go.dev/issue/78778
https://groups.google.com/g/golang-announce/c/qcCIEXso47M
https://pkg.go.dev/vuln/GO-2026-4979