Vulnerability · Published Aug 11, 2026 · Assigned by VulnCheck

CVE-2026-72783Craft CMS 5.0.0-RC1 before 5.10.6 Path Traversal via ensurePathIsContained

Medium 6.2

In plain English

A medium-severity path traversal in cms from craftcms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.2Medium

Exploit odds (30 days)0.2%top 90.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	craftcms/cms	5.10.6	GHSA-7hxc-f267-h5q7
Packagist	craftcms/cms	4.18.2	GHSA-7hxc-f267-h5q7

Affected products (as reported)

Vendor	Product	Versions
craftcms	cms	5.0.0-RC1 – before 5.10.6
craftcms	cms	4.0.0-RC1 – before 4.18.2

Weakness: CWE-22 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

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