CVE-2026-56394 json
Craft CMS - Authenticated Path Traversal in assets/icon Extension Parameter
published 4mo ago modified 3d ago also EUVD-2026-38160 , GHSA-c43v-4cr8-6mvp
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 42%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist craftcms/cms 4.17.7, 5.9.13
- craftcms cms 4.17.7, 5.9.13
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4mo ago
Exploit prediction
0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| CNA | 4.0 | 7.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | craftcms/cms | >=4.0.0-RC1, <4.17.7 >=5.0.0-RC1, <5.9.13 |
4.17.7 5.9.13 |
Affected products
- craftcms cms
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/craftcms/cms/commit/30f5f1a8d6edf0f3a00be72c42c78d9dc7d72d5c
patch, web
-
github.com
/craftcms/cms/security/advisories/GHSA-c43v-4cr8-6mvp
vendor-advisory, web
-
vulncheck.com
/advisories/craft-cms-authenticated-path-traversal-in-assets-icon-extension-parameter
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-56394
advisory
-
github.com
/craftcms/cms
package
Sources
- CVE List CVE-2026-56394
- GitHub Advisory GHSA-c43v-4cr8-6mvp
- NVD CVE-2026-56394
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.