Vulnerabilities CVE-2026-39817

CVE-2026-39817

Medium

Open

TLP:CLEAR

Invoking "go tool pack" does not sanitize output paths in cmd/go

NVD CVE.org

Critical Infrastructure

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Description

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.

Details

CVSS Score: 5.9
EPSS Score ⓘ: 0.17%

6.7th percentile
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N
Confidence: 90%
Published: May 7, 2026
Last Modified: May 8, 2026

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