Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2026-39817 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N
CNA: CISA-ADPCVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://go.dev/cl/767520 [email protected]Patch
https://go.dev/issue/78778 [email protected]Issue Tracking
https://groups.google.com/g/golang-announce/c/qcCIEXso47M [email protected]Issue TrackingMailing List
https://pkg.go.dev/vuln/GO-2026-4979 [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-787Out-of-bounds Write[email protected]

Affected Products

ProductVersions
golang go
< 1.25.10
>= 1.26.0, < 1.26.3

CPE

  • cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-39817
NVD Published Date:
May 7, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-39817 Details - Not Deferred