Craft CMS 5.0.0-RC1 before 5.10.6 Path Traversal via ensurePathIsContained

Description

Craft CMS versions >= 5.0.0-RC1 before 5.10.6 and >= 4.0.0-RC1 before 4.18.2 contain a theoretical path traversal weakness in the ensurePathIsContained function of the Local file system class. The order of operations validates the path before normalization, so normalization could invalidate prior validation assumptions (a desanitization-style issue) and potentially resolve to files outside the intended volume directory. The vendor notes the issue is not directly exploitable and no exploitable scenario has been discovered; the fix is recommended for hardening.

Scores

EPSS (exploitation in 30 days)

0.20% · top 90% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.9.

Weakness

• CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (opens in a new tab)All about CWE-22 and its CVEs

Affected products

• craftcms · cms

  • affected 5.0.0-RC1 – < 5.10.6
  • unaffected 5.10.6

• craftcms · cms

  • affected 4.0.0-RC1 – < 4.18.2
  • unaffected 4.18.2

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• Packagistcraftcms/cmsGHSA-7hxc-f267-h5q7 (opens in a new tab)

References (2)

• GitHub Security Advisory (GHSA-7hxc-f267-h5q7) (opens in a new tab)vendor-advisory
• VulnCheck Advisory: Craft CMS 5.0.0-RC1 before 5.10.6 Path Traversal via ensurePathIsContained (opens in a new tab)third-party-advisory

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-7hxc-f267-h5q7 (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-72783](https://trackcve.app/badge/CVE-2026-72783.svg)](https://trackcve.app/cve/CVE-2026-72783)

Record last updated 8 Oct 2026, 15:24 UTC.