What is CVE-2026-26997?

CVE-2026-26997 is a medium-severity vulnerability in Macwarrior Clipbucket-V5, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-02-27.

How severe is CVE-2026-26997?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Macwarrior Clipbucket-V5

CVE-2026-26997

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-02-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (17.2th percentile), scored 2026-10-25.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000

Affected products

Macwarrior Clipbucket-V5 — versions < 5.5.3 #59
Oxygenz Clipbucket

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-97r6-4hmx-hcrh (Exploit, Vendor Advisory)
github.com/MacWarrior/clipbucket-v5/commit/2da4c8e41f9e4baf47ff89f8a674fbe9b63a… (Patch)

Frequently asked questions

What is CVE-2026-26997?: CVE-2026-26997 is a medium-severity vulnerability in Macwarrior Clipbucket-V5, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-02-27.
How severe is CVE-2026-26997?: Medium severity. CVSS v3 base score is 5.4 out of 10.