What is CVE-2020-27576?

CVE-2020-27576 is a medium-severity vulnerability in Maxum Rumpus, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-03-08.

How severe is CVE-2020-27576?

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

XSS in Maxum Rumpus

CVE-2020-27576

Maxum Rumpus 8.2.13 and 8.2.14 is affected by cross-site scripting (XSS). Users are able to create folders in the web application. The folder name is insufficiently validated resulting in a stored cross-site scripting vulnerability.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-03-08 · last modified 2026-07-09.

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: 0.006 (44.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Maxum Rumpus — versions 8.2.13, 8.2.14

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

af854a3a-2127-422b-91ae-364da2661108 (Product)
tvrbk.github.io/cve/2021/03/07/rumpus.html (Third Party Advisory)

Frequently asked questions

What is CVE-2020-27576?: CVE-2020-27576 is a medium-severity vulnerability in Maxum Rumpus, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-03-08.
How severe is CVE-2020-27576?: Medium severity. CVSS v3 base score is 5.4 out of 10.