CVE-2026-4337

HIGH 8.8CVE-2026-4337 · Published 27/10/2026 · updated 04/11/2026

In short

CVE-2026-4337 is a HIGH (CVSS 8.8) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 0.33%, higher than 25.8% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

Description

Unrestricted Upload of File with Dangerous Type vulnerability in the PuMuKIT application allows a unauthenticated user to upload any type of file to the server, and to any path where the web server user has write permissions. This could also allow them to delete files.

References

incibe.es/en/incibe-cert/notices/aviso/unrestricted-upload-file-pumukit-application

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