CVE-2026-56394

MEDIUM 6.5

Craft CMS - Authenticated Path Traversal in assets/icon Extension Parameter

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

Craft CMS from 4.0.0-RC1 contains an authenticated path traversal vulnerability in the assets/icon endpoint where the extension parameter is not validated before file existence checks. Attackers can bypass extension validation by passing traversal sequences that resolve to existing SVG files, allowing local file read access.

CWE	CWE-22
Vendor	craftcms
Product	cms
Published	Jun 21, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

craftcms / cms

4.0.0-RC1 < 4.17.7 5.0.0-RC1 < 5.9.13

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/craftcms/cms/security/advisories/GHSA-c43v-4cr8-6mvp github.com: https://github.com/craftcms/cms/commit/30f5f1a8d6edf0f3a00be72c42c78d9dc7d72d5c vulncheck.com: https://www.vulncheck.com/advisories/craft-cms-authenticated-path-traversal-in-assets-icon-extension-parameter

Credits

🔍 GCXWLP