PatchSiren cyber security CVE debrief
CVE-2026-71493 infracost CVE debrief
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-21T18:16:50.440Z and has not been modified since then. Infracost versions prior to 0.10.45 contain a path traversal vulnerability due to insufficient validation of file paths. The vulnerability allows attackers to read arbitrary files by exploiting a lexical filepath.Rel check and a leaf-only os.Lstat check that do not resolve intermediate directory symlinks. Engineers and administrators using Infracost for cloud cost intelligence should be aware of this vulnerability and take steps to update their installations to version 0.10.45 or later.
- Vendor
- infracost
- Product
- Unknown
- CVSS
- MEDIUM 5.9
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-08-21
- Original CVE updated
- 2026-08-21
- Advisory published
- 2026-08-21
- Advisory updated
- 2026-08-21
Who should care
Engineers and administrators using Infracost for cloud cost intelligence should be aware of this vulnerability and take steps to update their installations to version 0.10.45 or later. They should review repository configurations and monitor Infracost dashboard and pull request comments for suspicious activity.
Technical summary
Infracost versions prior to 0.10.45 contain a path traversal vulnerability due to insufficient validation of file paths. The vulnerability allows attackers to read arbitrary files by exploiting a lexical filepath.Rel check and a leaf-only os.Lstat check that do not resolve intermediate directory symlinks. This issue can be surfaced through the Infracost dashboard or pull request comment, with greater impact in workflows that provide repository secrets.
Defensive priority
Engineers should prioritize updating Infracost to version 0.10.45 or later to address the path traversal vulnerability.
Recommended defensive actions
- Update Infracost to version 0.10.45 or later
- Review repository configurations for potential vulnerabilities
- Monitor Infracost dashboard and pull request comments for suspicious activity
- Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
- Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
- Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
- Check relevant monitoring, detection, and logs for exposed assets that need extra review.
Evidence notes
The CVE record indicates that Infracost versions prior to 0.10.45 contain a path traversal vulnerability. The issue is fixed in version 0.10.45. Limited evidence is available regarding the vulnerability's impact and affected systems. Further review of repository configurations and Infracost dashboard and pull request comments is necessary to assess the vulnerability's impact.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-21T18:16:50.440Z and has not been modified since then.