CVE-2026-26997

Received Received - Intake

Stored XSS in ClipBucket v5 Allows Admin Payload Execution

Publication date: 2026-02-27

Last updated on: 2026-03-03

Assigner: GitHub, Inc.

Description

ClipBucket v5 is an open source video sharing platform. Prior to version 5.5.3 #59, a normal authenticated user can store the XSS payload. The payload is triggered by administrator. Version 5.5.3 #59 fixes the issue.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-02-27

Last Modified

2026-03-03

Generated

2026-07-06

AI Q&A

2026-02-27

EPSS Evaluated

2026-07-05

NVD

CVE-2026-26997

EUVD

EUVD-2026-9051

Affected Vendors & Products

Vendor	Product	Version / Range
oxygenz	clipbucket	From 5.3 (inc) to 5.5.3-59 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability exists in ClipBucket version 5 before 5.5.3 #59. It allows a normal authenticated user to store a cross-site scripting (XSS) payload. This malicious payload is then triggered when an administrator views it.

Impact Analysis

The vulnerability can lead to an administrator unintentionally executing malicious scripts stored by a normal user. This could result in unauthorized actions performed with administrator privileges, potentially compromising the security and integrity of the platform.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, upgrade ClipBucket to version 5.5.3 #59 or later, as this version fixes the issue where a normal authenticated user can store an XSS payload that is triggered by an administrator.

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