CVE-2026-64672

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CVE-2026-64672

Summary: Terragrunt catalog predictable temp symlink clobber

Details: Terragrunt is a flexible orchestration tool that allows Infrastructure as Code written in OpenTofu or Terraform to scale. Prior to 1.1.1, the terragrunt catalog command derives a predictable per-repository catalog clone root under the shared system temporary directory and follows a symlink already placed at that path. A local attacker who can write to the temporary directory and predict the cataloged repository can redirect cleanup and cloning outside the intended root, causing an existing repository-named directory to be deleted and replaced in the victim's security context. The attack requires the victim to run terragrunt catalog on a shared host while the symlink is present, and it is not remotely exploitable. This issue is fixed in version 1.1.1.

References: https://github.com/gruntwork-io/terragrunt/releases/tag/v1.1.1, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64672.json, https://github.com/gruntwork-io/terragrunt/security/advisories/GHSA-wv6g-x823-wx9m, https://nvd.nist.gov/vuln/detail/CVE-2026-64672, https://github.com/gruntwork-io/terragrunt/commit/668891c5a2ad2996f134bb8b00098754674ea94a, https://github.com/gruntwork-io/terragrunt/pull/6438