CVE-2026-77929

ClipBucket < 5.5.3-#182 Remote Code Execution via Photo Upload Endpoint

Published Sep 18, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
ClipBucket v5 before 5.5.3-#182 contains a file upload vulnerability that allows authenticated users to achieve remote code execution by uploading a PHP file with valid image magic bytes through the photo upload endpoint. The FileUpload::manageFile() function in fileupload.class.php fails to update the file extension after MIME validation, allowing an attacker-controlled .php extension to persist on disk and execute as PHP via PHP-FPM when the uploaded file is retrieved.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Oxygenz
Oxygenz clipbucket
CPEs cpe:2.3:a:oxygenz:clipbucket:*:*:*:*:*:*:*:*
Vendors & Products Oxygenz
Oxygenz clipbucket
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Macwarrior
Macwarrior clipbucket-v5
Vendors & Products Macwarrior
Macwarrior clipbucket-v5
Type Values Removed Values Added
Description ClipBucket v5 before 5.5.3-#182 contains a file upload vulnerability that allows authenticated users to achieve remote code execution by uploading a PHP file with valid image magic bytes through the photo upload endpoint. The FileUpload::manageFile() function in fileupload.class.php fails to update the file extension after MIME validation, allowing an attacker-controlled .php extension to persist on disk and execute as PHP via PHP-FPM when the uploaded file is retrieved.
Title ClipBucket < 5.5.3-#182 Remote Code Execution via Photo Upload Endpoint
Weaknesses CWE-434
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 1, 2026, 7:19 PM
Reserved
Aug 21, 2026, 5:52 PM
Status
Deferred
Published
Sep 18, 2026, 3:17 PM
Modified
Sep 22, 2026, 8:53 PM