CVE-2026-39819
medium
CVSS v3
5.3
CVSS v2
—
VIR risk
5.3
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.
Predictions
Exploit likelihood
53%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-39819.html
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-39819
Vendor advisory: security@golang.org — https://pkg.go.dev/vuln/GO-2026-4978
Vendor advisory: security@golang.org — https://go.dev/cl/763882
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | forky | fixed | 1.25.10-1 |
| debian | sid | fixed | 1.25.10-1 |
| debian | bullseye | affected | |
| debian | trixie | affected | |
| debian | bookworm | affected | |
| sles | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | toolchain | >=1.26.0-0,<1.26.3 | 1.25.10 |
References
CWEs
CWE-59
Verify integrity in audit chain (admin only). AS-IS.