CVE-2026-26997
Stored XSS in ClipBucket v5 Allows Admin Payload Execution
Publication date: 2026-02-27
Last updated on: 2026-03-03
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| oxygenz | clipbucket | From 5.3 (inc) to 5.5.3-59 (exc) |
Helpful Resources
Exploitability
| 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
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
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.