CVE-2026-39819
published 2026-05-07CVE-2026-39819: 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…
PriorityP429medium5.3CVSS 3.1
AVLACHPRLUINSUCLIHAN
EPSS
0.18%
7.6th percentile
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.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| go_toolchain | cmd_go | < 1.25.10 | 1.25.10 |
| go_toolchain | cmd_go | >= 1.26.0-0 < 1.26.3 | 1.26.3 |
| golang | go | < 1.25.10 | 1.25.10 |
| golang | go | >= 1.26.0 < 1.26.3 | 1.26.3 |
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VulDB
cmd-go up to 1.25.9/1.26.2 on Go /tmp temp file (EUVD-2026-28422)
vuldb·2026-05-07
CVE-2026-39819 [CRITICAL] cmd-go up to 1.25.9/1.26.2 on Go /tmp temp file (EUVD-2026-28422)
A vulnerability has been found in cmd-go up to 1.25.9/1.26.2 on Go and classified as critical. Affected by this issue is some unknown functionality of the file /tmp. This manipulation causes insecure temporary file.
This vulnerability is registered as CVE-2026-39819. Remote exploitation of the attack is possible. No exploit is available.
The affected component should be upgraded.
GHSA
GHSA-5m4p-2gjx-p2g8: The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp")
ghsa_unreviewed·2026-05-07
CVE-2026-39819 [MEDIUM] GHSA-5m4p-2gjx-p2g8: The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp")
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.
No detection rules found.
No public exploits indexed.
2026-05-07
Published