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.
Published: 2026-09-18
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Sat, 26 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Fri, 18 Sep 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared Macwarrior
Macwarrior clipbucket-v5
Vendors & Products Macwarrior
Macwarrior clipbucket-v5

Fri, 18 Sep 2026 14:45:00 +0000

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'}


Subscriptions

Macwarrior Clipbucket-v5
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-26T13:29:51.080Z

Reserved: 2026-08-21T17:52:36.079Z

Link: CVE-2026-77929

cve-icon Vulnrichment

Updated: 2026-09-18T15:27:44.647Z

cve-icon NVD

Status : Deferred

Published: 2026-09-18T15:17:13.287

Modified: 2026-09-22T20:53:07.383

Link: CVE-2026-77929

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-19T18:45:14Z

Weaknesses
  • CWE-434

    Unrestricted Upload of File with Dangerous Type