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GHSA-fr6r-p8hv-x3c4
Umbraco.CmsImpact
Via a manipulated API request it's possible to upload a file that doesn't adhere with the configured allowable file extensions.
Patches
Patched in 15.4.2 and 16.0.0.
Workarounds
None available.
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The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data. There is a low impact on the availability of the system.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
- CVE-2025-48953Alias
- EUVD-2025-16778Alias
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