CVE-2026-77929 ClipBucket - Remote Code Execution

ClipBucket v5 < 5.5.3-#182 contains a remote code execution caused by improper file extension update after MIME validation in FileUpload::manageFile(), letting authenticated users execute PHP code via photo upload endpoint.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.94% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
18 September 2026
Updated
15 October 2026
Weakness
CWE-434

Vendor fix

Upgrade to version 5.5.3-#182 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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