CVE-2026-71494: Infracost Terraform Cloud And Registry Token Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-6x6c-w9w9-hv4h",
  "modified" : "2026-09-08T18:14:12Z",
  "published" : "2026-09-08T18:14:12Z",
  "aliases" : [ "CVE-2026-71494" ],
  "summary" : "Infracost: Terraform Cloud and registry token disclosure via unvalidated hostname",
  "details" : "### Impact\n\nSensitive information exposure in the Infracost Terraform Cloud/Enterprise integration. Several code paths attached a configured secret token to a request whose host was taken straight from the scanned Terraform, with no check that the host was the trusted endpoint. \n\nThe condition that matters is whether a Terraform Cloud/Enterprise (or registry) token is present in the run: if one is, the injected hostname can disclose it. Impact therefore depends on the trigger. Under `on: pull_request` (the only configuration in Infracost's documentation) fork pull requests run without secrets, so no token is present. It only reaches token disclosure under `pull_request_target`, a same-repository pull request, or another CI setup that provides the token alongside untrusted Terraform, and exploiting an untrusted fork pull request also typically needs a maintainer to approve the workflow run. The patch scopes the token to the trusted host regardless of trigger.\n\n### Patches\n\nFixed in `v0.10.45` ([#3590](https://github.com/infracost/infracost/pull/3590)) by attaching a token only when the destination host matches the configured trusted host; otherwise Infracost refuses to send it and skips remote variable loading\n  - Installed via the official script, a package manager, or the `latest` Docker tag: upgrade to `v0.10.45` (or later) to receive the fix.\n  - Pinned to a specific version or image digest: bump to `v0.10.45`.\n\n### Workarounds\n\nNo full fix without upgrading. To limit exposure: use `on: pull_request` rather than `pull_request_target`, pin `organization`, `workspace`, and `host` in Infracost config so the `.tf` hostname is ignored, and keep Terraform Cloud and registry tokens out of runs that process untrusted pull request content.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/infracost/infracost"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.10.45"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/infracost/infracost/security/advisories/GHSA-6x6c-w9w9-hv4h"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-71494"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/infracost/infracost/pull/3590"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/infracost/infracost/commit/3d24c757f5e4e60c7259f1b89ad7ceaabcfca86f"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/infracost/infracost"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/infracost/infracost/releases/tag/v0.10.45"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-522" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-08T18:14:12Z",
    "nvd_published_at" : "2026-08-21T18:16:50Z"
  }
}