Skip to content
Fencer Vulns
medium 6.1

CVE-2020-26505 json

A Stored Cross-Site Scripting (XSS) vulnerability in the “Marmind” web application with version 4.1.141.0 allows an attacker to inject code…

published 2020-11-05 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-19052

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

A Stored Cross-Site Scripting (XSS) vulnerability in the “Marmind” web application with version 4.1.141.0 allows an attacker to inject code that will later be executed by legitimate users when they open the assets containing the JavaScript code. This would allow an attacker to perform unauthorized actions in the application on behalf of legitimate users or spread malware via the application. By using the “Assets Upload” function, an attacker can abuse the upload function to upload a malicious PDF file containing a stored XSS.

Exploit prediction

0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • www2.deloitte.com https://www2.deloitte.com/de/de/pages/risk/articles/marmind-xss.html?nc=1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.