Vulnerability DatabaseCVE-2026-39819
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CVE-2026-39819
Published:May 07, 2026
Updated:May 16, 2026
The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.
Affected Packages
https://github.com/golang/go.git (GITHUB):
Affected version(s) >=go1 <go1.25.10
Fix Suggestion:
Update to version go1.25.10
https://github.com/golang/go.git (GITHUB):
Affected version(s) >=go1.26.0 <go1.26.3
Fix Suggestion:
Update to version go1.26.3
github.com/golang/go (GO):
Affected version(s) >=go1.26.0 <go1.26.3
Fix Suggestion:
Update to version go1.26.3
github.com/golang/go (GO):
Affected version(s) >=go1 <go1.25.10
Fix Suggestion:
Update to version go1.25.10
Related Resources (4)
https://go.dev/issue/78584
https://go.dev/cl/763882
https://groups.google.com/g/golang-announce/c/qcCIEXso47M
https://pkg.go.dev/vuln/GO-2026-4978
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CVSS v4
Base Score:
5.8
Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Improper Link Resolution Before File Access ('Link Following')
CWE-59
EPSS
Base Score:
0.01