What is the CVSS score of CVE-2026-26997?

CVE-2026-26997 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Clipbucket are affected by CVE-2026-26997?

Organizations using ClipBucket v5 should be aware of moderate risk from CVE-2026-26997, a cross-site scripting vulnerability rated CVSS 5.4.. A patch is available.

Is there a public PoC exploit available for CVE-2026-26997?

Yes, a public proof-of-concept exploit is available for CVE-2026-26997. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-26997?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Clipbucket CVE-2026-26997

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-02-27 security-advisories@github.com

XSS Clipbucket Oxygenz

5.4

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Mar 03, 2026 - 20:10 vuln.today

Public exploit code

Patch released

Mar 03, 2026 - 20:10 nvd

Patch available

CVE Published

Feb 27, 2026 - 20:21 nvd

MEDIUM 5.4

DescriptionGitHub Advisory

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.

AnalysisAI

Stored cross-site scripting in ClipBucket v5 prior to version 5.5.3 #59 allows authenticated users to inject malicious scripts that execute when viewed by administrators, enabling session hijacking or credential theft. Public exploit code exists for this vulnerability, which affects the open-source video sharing platform and has been patched in the latest release.

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Clipbucket. 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.

RemediationAI

A vendor patch is available — apply it immediately. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.