CVE-2026-33158 json
Craft CMS: Low-privilege users could read private asset contents when editing an asset (IDOR)
published 7mo ago modified 4mo ago also EUVD-2026-14936 , GHSA-3pvf-vxrv-hh9c
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.8 and from version 5.0.0-RC1 to before version 5.9.14, a low-privileged authenticated user can read private asset content by calling assets/edit-image with an arbitrary assetId that they are not authorized to view. The endpoint returns image bytes (or a preview redirect) without enforcing a per-asset view authorization check, leading to potential unauthorized disclosure of private files. This issue has been patched in versions 4.17.8 and 5.9.14.
Patch / fix
- packagist craftcms/cms 4.17.8, 5.9.14
- craftcms craft_cms 4.17.8, 5.9.14
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 4.9 | 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:U |
| CNA | 4.0 | 4.9 | 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:U/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 |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | craftcms/cms | >=4.0.0-RC1, <4.17.8 >=5.0.0-RC1, <5.9.14 |
4.17.8 5.9.14 |
Affected products
- craftcms cms
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
References
-
github.com
/craftcms/cms/commit/7290d91639e5e3a4f7e221dfbef95c9b77331860
web, patch
-
github.com
/craftcms/cms/security/advisories/GHSA-3pvf-vxrv-hh9c
web, vendor-advisory
-
github.com
/craftcms/cms/releases/tag/4.17.8
web, release-notes
-
github.com
/craftcms/cms/releases/tag/5.9.14
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-33158
advisory
-
github.com
/craftcms/cms
package
Sources
- CVE List CVE-2026-33158
- GitHub Advisory GHSA-3pvf-vxrv-hh9c
- NVD CVE-2026-33158
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.