ClipBucket < 5.5.3-#182 Remote Code Execution via Photo Upload Endpoint (CVE-2026-77929) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-77929

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

Answer in brief

CVE-2026-77929 records a Unknown severity vulnerability in ClipBucket < 5.5.3-#182 Remote Code Execution via Photo Upload Endpoint. The current sources do not mark it as known exploited. The current feed maps MacWarrior/clipbucket-v5 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 18, 2026Updated Sep 18, 2026Source checked Sep 18, 2026First seen by HOL Sep 18, 2026Material review Sep 18, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps MacWarrior/clipbucket-v5 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
MacWarrior/clipbucket-v5generic	>=0 <5.5.3-#182	5.5.3-#182

Recommended response

Check inventory. Check lockfiles and deployed manifests for MacWarrior/clipbucket-v5.
Review the reported fix. Update MacWarrior/clipbucket-v5 to 5.5.3-#182 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 18, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 18, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 18, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.