Critical severity10.0OSV Advisory· Published Dec 22, 2025· Updated Jul 8, 2026
CVE-2025-67288
CVE-2025-67288
Description
An arbitrary file upload vulnerability in Umbraco CMS v16.3.3 allows attackers to execute arbitrary code by uploading a crafted PDF file. NOTE: this is disputed by the Supplier because the responsibility for file validation (as shown in the documentation) belongs to the system administrator who is implementing Umbraco CMS in their environment, not to Umbraco CMS itself. The Supplier also states that PDF JavaScript runs in a completely isolated sandbox, not the browser's DOM context, which means that privilege boundaries would not be crossed, a related issue to CVE-2023-49279.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
Umbraco.CmsNuGet | <= 16.3.3 | — |
Affected products
34.7.2, Release-4.5.2, Release-4.6.0, …+ 1 more
- (no CPE)range: 4.7.2, Release-4.5.2, Release-4.6.0, …
- cpe:2.3:a:umbraco:umbraco_cms:16.3.3:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-54mj-vcvj-q3v5ghsaADVISORY
- github.com/vuquyen03/CVE/tree/main/CVE-2025-67288nvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2025-67288ghsaADVISORY
- umbraco.comghsaWEB
- docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validationghsaWEB
- github.com/github/advisory-database/pull/6633ghsaWEB
News mentions
0No linked articles in our index yet.