CVE-2026-71493

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 65% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.9Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.9
EG Score
5.9(medium)
EG Risk
27(Track)
EG Risk 27/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity59% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

August 21, 2026

Last Modified

August 26, 2026

Advisory Details (4)

Auto-updated Aug 21, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available

Arbitrary file read via config-template readFile symlink traversal · Advisory · infracost/infracost · GitHub

https://github.com/infracost/infracost/security/advisories/GHSA-mmg6-4qmv-6pc8
github_release Patch Available

v0.10.45

Patch available: infracost/infracost v0.10.45

https://github.com/infracost/infracost/releases/tag/v0.10.45
github_pr

fix(security): resolve intermediate symlinks in path confinement

Fix merged in infracost/infracost PR #3586 on 2026-06-26 — awaiting tagged release

https://github.com/infracost/infracost/pull/3586
github_commit

commit 4d39331afc0e (infracost/infracost)

Fix landed in infracost/infracost commit 4d39331afc0e — awaiting tagged release

https://github.com/infracost/infracost/commit/4d39331afc0e27752d16d9d91c34583e5e8487fb

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 16× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-30 02:08 UTCEG score recompute
  2. 2026-08-30 01:22 UTCEPSS rescore
  3. 2026-08-29 01:07 UTCEG score recompute
  4. 2026-08-28 21:42 UTCEPSS rescore
  5. 2026-08-27 19:24 UTCEG score recompute
  6. 2026-08-26 18:24 UTCEG score recompute
  7. 2026-08-26 18:07 UTCEG score recompute
  8. 2026-08-26 14:47 UTCEPSS rescore
  9. 2026-08-25 22:30 UTCEG score recompute
  10. 2026-08-25 13:49 UTCEPSS rescore
  11. 2026-08-24 21:29 UTCEG score recompute
  12. 2026-08-23 20:17 UTCEG score recompute
  13. 2026-08-23 00:19 UTCEPSS rescore
  14. 2026-08-21 18:18 UTCEG score recompute
  15. 2026-08-21 18:04 UTCEG score recompute
  16. 2026-08-21 18:04 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-71493?
CVE-2026-71493 is a medium vulnerability published on August 21, 2026. 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…
When was CVE-2026-71493 disclosed?
CVE-2026-71493 was first published in the National Vulnerability Database on August 21, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71493 actively exploited?
CVE-2026-71493 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 64.6% of all scored CVEs.
What is the CVSS score of CVE-2026-71493?
CVE-2026-71493 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2026-71493?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71493, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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