4.3

CVE-2021-20283: fedoraproject fedora Incorrect Authorization

CVSS: 4.3v3.1MediumModified
AliasesUBUNTU-CVE-2021-20283
Published 15-03-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-20283 is a medium (CVSS 4.3) Incorrect Authorization vulnerability in fedoraproject fedora. EPSS estimates a 1.11% chance of exploitation in the next 30 days, higher than 65.4% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (NVD)
EPSS score
1.11%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-03-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

The web service responsible for fetching other users' enrolled courses did not validate that the requesting user had permission to view that information in each course in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.11%

Chance of exploitation in the next 30 days

Percentile

65%

Versus all other CVEs

30-day change

+0.04 pp

From 1.07% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.11%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Fedoraproject1 product
Moodle1 product
  • moodle≥ 3.5.0, < 3.5.17 | ≥ 3.8.0, < 3.8.8 | ≥ 3.9.0, < 3.9.5 | ≥ 3.10.0, < 3.10.2
Ubuntu1 product
  • moodleAll versions (No fix recorded)

3 vendors · 3 products

References

6 links