---
id: CVE-2026-71493
title: >-
  Infracost provides cloud cost intelligence for engineers, AI coding agents,
  and CI/CD
summary: >-
  Infracost provides cloud cost intelligence for engineers, AI coding agents,
  and CI/CD. Prior to 0.10.45, the readFile, pathExists, isDir, and matchPaths
  template functions in internal/config/template/parser.go use a lexical
  filepath.Rel …
severity: medium
cwe:
  - CWE-22
  - CWE-59
vendor: infracost
product: github.com/infracost/infracost
affected:
  - github.com/infracost/infracost < 0.10.45
patched:
  - github.com/infracost/infracost 0.10.45
published: '2026-08-21'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T20:09:01.757'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-71493'
references:
  - url: >-
      https://github.com/infracost/infracost/commit/4d39331afc0e27752d16d9d91c34583e5e8487fb
    label: security-advisories@github.com
  - url: 'https://github.com/infracost/infracost/pull/3586'
    label: security-advisories@github.com
  - url: 'https://github.com/infracost/infracost/releases/tag/v0.10.45'
    label: security-advisories@github.com
  - url: >-
      https://github.com/infracost/infracost/security/advisories/GHSA-mmg6-4qmv-6pc8
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-71493'
  - url: 'https://github.com/infracost/infracost'
  - url: 'https://github.com/advisories/GHSA-mmg6-4qmv-6pc8'
tags:
  - nvd
  - osv
  - go
  - ghsa
epss: 0.00544
epssPercentile: 0.43232
aliases:
  - GHSA-mmg6-4qmv-6pc8
ecosystem: go
ingestedAt: '2026-09-08T19:08:49.635Z'
---

## Overview

Infracost provides cloud cost intelligence for engineers, AI coding agents, and CI/CD. Prior to 0.10.45, the readFile, pathExists, isDir, and matchPaths template functions in internal/config/template/parser.go use a lexical filepath.Rel check and a leaf-only os.Lstat check that do not resolve an intermediate directory symlink. A repository can contain a path such as evil/file where evil points outside the checkout, causing os.ReadFile and related operations to follow the symlink and read runner-accessible files. The resulting content is rendered into generated configuration and can be surfaced through the Infracost dashboard or pull request comment, with greater impact in workflows that provide repository secrets. This issue is fixed in version 0.10.45.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-71493)

Affected packages:

- `github.com/infracost/infracost < 0.10.45`

Patched in:

- `github.com/infracost/infracost 0.10.45`

Source: https://osv.dev/vulnerability/GHSA-mmg6-4qmv-6pc8