Arbitrary File Upload Affecting umbraco.cms.core package, versions [14.0.0-rc1, 15.4.2)[16.0.0-rc,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published4 Jun 2025
- disclosed3 Jun 2025
- credit00mpal00mpa
Introduced: 3 Jun 2025
NewCVE-2025-48953 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Arbitrary File Upload through a manipulated API request. An attacker can upload unauthorized files by crafting a request that bypasses the configured file extension checks.