CVE-2026-39817: Invoking "go tool pack" does not sanitize output paths in cmd/go
Go toolchain · cmd/go
Vendor fix available · Affected: Go toolchain cmd/go · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 6% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Go toolchain · cmd/gobefore 1.25.10; from 1.26.0-0 before 1.26.3
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Go toolchain
- Published
- May 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-39817 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.