4.3

CVE-2021-30156: fedoraproject fedora

CVSS: 4.3v3.1MediumModified
AliasesUBUNTU-CVE-2021-30156
Published 09-04-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-30156 is a medium (CVSS 4.3) vulnerability in fedoraproject fedora. EPSS estimates a 1.14% chance of exploitation in the next 30 days, higher than 66.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (NVD)
EPSS score
1.14%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 09-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Special:Contributions can leak that a "hidden" user exists.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.14%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

0.00 pp

From 1.14% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.14%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (phabricator.wikimedia.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Fedoraproject1 product
Mediawiki1 product
Ubuntu1 product
  • mediawikiAll versions (No fix recorded)

3 vendors · 3 products

References

6 links