CVE-2026-39819
Last modified
CVE-2026-39819 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Golang | Go | < 1.25.10 |
| Golang | Go | >= 1.26.0, < 1.26.3 |
References
- https://go.dev/issue/78584Issue Tracking
- https://groups.google.com/g/golang-announce/c/qcCIEXso47MIssue Tracking, Mailing List
- https://pkg.go.dev/vuln/GO-2026-4978Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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