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Fencer Vulns
medium 5.4

CVE-2024-25974 json

Stored Cross-Site Scripting (XSS) within the Media Center

published 2024-02-20 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-23276

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

The Frentix GmbH OpenOlat LMS is affected by stored a Cross-Site Scripting (XSS) vulnerability. It is possible to upload files within the Media Center of OpenOlat version 18.1.5 (or lower) as an authenticated user without any other rights. Although the filetypes are limited, an SVG image containing an XSS payload can be uploaded. After a successful upload the file can be shared with groups of users (including admins) who can be attacked with the JavaScript payload.

Patch / fix

  • frentix openolat 18.1.6

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • r.sec-consult.com https://r.sec-consult.com/openolat referenced PoC, tagged "exploit" by a source, unverified
  • seclists.org http://seclists.org/fulldisclosure/2024/Feb/23 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

  • Frentix GmbH OpenOlat LMS
  • frentix openolat

Classification

Weakness
  • CWE-20 Improper Input Validation
  • 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.