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

Quick assessment

Affected
craftcms cms
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Craft CMS是Craft CMS公司的一套内容管理系统(CMS)。 Craft CMS 5.0.0-RC1至5.10.6之前版本和4.0.0-RC1至4.18.2之前版本存在路径遍历漏洞，该漏洞源于Local文件系统类的ensurePathIsContained函数存在路径遍历问题，路径验证在归一化之前进行，归一化可能使先前验证假设失效，可能导致访问预期卷目录之外的文件。

CVSS 6.2 · Medium EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery

Affected Version Matrix 4

VendorProduct Version RangeStatus
craftcms cms 5.0.0-RC1< 5.10.6 affected
5.10.6 unaffected
4.0.0-RC1< 4.18.2 affected
4.18.2 unaffected
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I. Basic Information for CVE-2026-72783

Vulnerability Information
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Vulnerability Title
Craft CMS 5.0.0-RC1 before 5.10.6 Path Traversal via ensurePathIsContained
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Craft CMS 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Craft CMS是Craft CMS公司的一套内容管理系统(CMS)。 Craft CMS 5.0.0-RC1至5.10.6之前版本和4.0.0-RC1至4.18.2之前版本存在路径遍历漏洞，该漏洞源于Local文件系统类的ensurePathIsContained函数存在路径遍历问题，路径验证在归一化之前进行，归一化可能使先前验证假设失效，可能导致访问预期卷目录之外的文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
craftcms cms 5.0.0-RC1 ~ 5.10.6 -
craftcms cms 4.0.0-RC1 ~ 4.18.2 -

II. Public POCs for CVE-2026-72783

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III. Intelligence Information for CVE-2026-72783

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Vendor Advisories for CVE-2026-72783 (2)

Same Patch Batch · craftcms · 2026-08-11 · 8 CVEs total

CVE-2026-72778 8.8 HIGH Craft CMS 5.0.0-RC1 before 5.10.6 Authenticated RCE via condition.config
CVE-2026-72781 8.8 HIGH Craft CMS 5.0.0-RC1 before 5.10.7 Remote Code Execution via Twig Sandbox Escape
CVE-2026-72780 6.5 MEDIUM Craft CMS before 5.10.5 WebAuthn Assertion Replay via login-with-passkey
CVE-2026-72782 6.5 MEDIUM Craft CMS 5.0.0-RC1 before 5.10.6 Environment Variable Leak
CVE-2026-72784 5.4 MEDIUM Craft CMS 5.0.0-RC1 before 5.10.6 SSRF via GraphQL asset mutation
CVE-2026-72779 4.5 MEDIUM Craft CMS 5.0.0-RC1 before 5.10.6 Arbitrary File Read via SplFileObject
CVE-2026-72785 4.3 MEDIUM Craft CMS before 5.10.6 Authorization Bypass via structures/move-element

IV. Related Vulnerabilities

Same product: cms
Same vendor: craftcms
Same weakness: CWE-22

V. Comments for CVE-2026-72783

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