CVE-2026-39817
Invoking "go tool pack" does not sanitize output paths in cmd/go
MEDIUM 5.9
At a glance
- Source
- NVD
- EPSS
- EPSS 0.17 % · percentile 6 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Go
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-787 — Out-of-bounds Write
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.9 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N | CISA-ADP |
| CVSS 3.1 | MEDIUM 5.9 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 3.1 | MEDIUM 5.9 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
Advisories
- GO-2026-4979 — Invoking "go tool pack" does not sanitize output paths in cmd/go
European references
- ENISA EUVD · EUVD-2026-28421
- GCVE · GCVE-0-2026-39817
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1249 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*< 1.25.10cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*≥ 1.26.0 < 1.26.3
Affected products
| Product | Versions |
|---|---|
| Go toolchain · cmd/go | affected 0 < 1.25.10 ; affected 1.26.0-0 < 1.26.3 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |