5.4

CVE-2021-36568: fedoraproject fedora Cross-site Scripting

CVSS: 5.4v3.1MediumModified
AliasesUBUNTU-CVE-2021-36568
Published 13-09-2022Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-36568 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in fedoraproject fedora. EPSS estimates a 1.04% chance of exploitation in the next 30 days, higher than 63.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (NVD)
EPSS score
1.04%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 13-09-2022
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

In certain Moodle products after creating a course, it is possible to add in a arbitrary "Topic" a resource, in this case a "Database" with the type "Text" where its values "Field name" and "Field description" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11 and Moodle 3.10.4 and Moodle 3.9.7.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

1.04%

Chance of exploitation in the next 30 days

Percentile

64%

Versus all other CVEs

30-day change

+0.02 pp

From 1.02% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.04%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (blog.hackingforce.com.br)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Fedoraproject1 product
Moodle1 product
  • moodleEOL3.9.7 | 3.10.4 | 3.11.0
Ubuntu1 product
  • moodleAll versions (No fix recorded)

3 vendors · 3 products

References

6 links