Path traversal in Go programming language - CVE-2026-27139

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Main Vulnerability Database Vulnerabilities #VU124119

Path traversal in Go programming language - CVE-2026-27139

Published: March 19, 2026


Vulnerability identifier: #VU124119
CSH Severity: Low
CVSS v4 BT: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2026-27139
CWE-ID: CWE-22
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to access file metadata outside the intended root directory.

The vulnerability exists due to improper handling of symbolic links in os.FileInfo when listing directory contents via File.ReadDir or File.Readdir on Unix platforms. A local user can replace a path component with a symbolic link to cause lstat to access a file outside the root, allowing metadata disclosure.

The impact is limited to reading file metadata such as size and existence; it does not allow reading or modifying file contents. The user must have access to the directory being listed and the ability to create or modify symbolic links within the path.


Affected software

Go programming language
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
Development Tools Module
openSUSE Leap
Anolis OS
openEuler
IBM Watson Speech Services Cartridge for IBM Cloud Pak for Data
golang-help
golang-devel
golang
golang-tests
golang-src
golang-misc
golang-docs
golang-shared
golang-bin
go1.25-openssl-race
go1.25-openssl-debuginfo
go1.25-openssl-doc
go1.25-openssl
go1.25-race
go1.25
go1.25-doc
go1.26-openssl
go1.26-openssl-doc
go1.26-openssl-race
go1.26-race
go1.26-doc
go1.26

How to mitigate CVE-2026-27139

Install security update from vendor's website.

Go programming language - addressed in versions 1.25.8, 1.26.1
IBM Watson Speech Services Cartridge for IBM Cloud Pak for Data - update to 5.3.1 Patch 5
golang-help - addressed in versions 1.21.4-43, 1.21.4-44, 1.21.4-46
golang-devel - addressed in versions 1.21.4-43, 1.21.4-44, 1.21.4-46
golang - addressed in versions 1.21.4-43, 1.21.4-44, 1.21.4-46
golang-tests - update to 1.24.13-2
golang-src - update to 1.24.13-2
golang-misc - update to 1.24.13-2
golang-docs - update to 1.24.13-2
golang-shared - update to 1.24.13-2
golang-bin - update to 1.24.13-2
golang - update to 1.24.13-2
go1.25-openssl-race - addressed in versions 1.25.8-150000.1.18.1, 1.25.8-150600.13.15.1, 1.25.12-150000.1.27.1, 1.25.12-150600.13.21.1
go1.25-openssl-debuginfo - addressed in versions 1.25.8-150000.1.18.1, 1.25.8-150600.13.15.1, 1.25.12-150000.1.27.1, 1.25.12-150600.13.21.1
go1.25-openssl-doc - addressed in versions 1.25.8-150000.1.18.1, 1.25.8-150600.13.15.1, 1.25.12-150000.1.27.1, 1.25.12-150600.13.21.1
go1.25-openssl - addressed in versions 1.25.8-150000.1.18.1, 1.25.8-150600.13.15.1, 1.25.12-150000.1.27.1, 1.25.12-150600.13.21.1
go1.25-race - addressed in versions 1.25.8-150000.1.32.1, 1.25.12-150000.1.44.1
go1.25 - addressed in versions 1.25.8-150000.1.32.1, 1.25.12-150000.1.44.1
go1.25-doc - addressed in versions 1.25.8-150000.1.32.1, 1.25.12-150000.1.44.1
go1.26-openssl - addressed in versions 1.26.1-150000.1.3.1, 1.26.1-150600.13.3.1
go1.26-openssl-doc - addressed in versions 1.26.1-150000.1.3.1, 1.26.1-150600.13.3.1
go1.26-openssl-race - addressed in versions 1.26.1-150000.1.3.1, 1.26.1-150600.13.3.1
go1.26-race - update to 1.26.1-150000.1.6.1
go1.26-doc - update to 1.26.1-150000.1.6.1
go1.26 - update to 1.26.1-150000.1.6.1

External References

Related Security Bulletins