Authenticated Path Traversal Vulnerability in Craft CMS by Pixel & Tonic
CVE-2026-56394

7.1HIGH

Key Information:

Vendor

Craftcms

Status
Cms
Vendor
CVE Published:
21 June 2026

What is CVE-2026-56394?

Craft CMS versions from 4.0.0-RC1 have a vulnerability in the assets/icon endpoint due to insufficient validation of the extension parameter. This flaw allows attackers to exploit traversal sequences to access existing SVG files, compromising local file security and potentially exposing sensitive information. It is crucial for users of Craft CMS to assess their systems and apply necessary mitigations to protect against this security risk.

Affected Version(s)

cms 4.0.0-RC1 < 4.17.7

cms 5.0.0-RC1 < 5.9.13

cms 4.17.7

References

https://github.com/craftcms/cms/security/advisories/GHSA-...
vendor-advisory
https://github.com/craftcms/cms/commit/30f5f1a8d6edf0f3a0...
patch
https://www.vulncheck.com/advisories/craft-cms-authentica...
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

GCXWLP
.