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5.3 Medium

CVE-2026-39819 The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp")

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.

Affected products and versions

Product Affected versions Fixed in
cmd/go 1.26 1.26.0-0 → < 1.26.3 1.26.3
cmd/go 1.25 earliest → < 1.25.10 1.25.10

References

Timeline

  1. Published
  2. Last modified

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