9.8

CVE-2021-31556: fedoraproject fedora

CVSS: 9.8v3.1CriticalModified
Published 12-08-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-31556 is a critical (CVSS 9.8) vulnerability in fedoraproject fedora. EPSS estimates a 1.62% chance of exploitation in the next 30 days, higher than 75.6% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
1.62%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-08-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in the Oauth extension for MediaWiki through 1.35.2. MWOAuthConsumerSubmitControl.php does not ensure that the length of an RSA key will fit in a MySQL blob.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.62%

Chance of exploitation in the next 30 days

Percentile

76%

Versus all other CVEs

30-day change

0.00 pp

From 1.62% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.62%

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
Mediawiki1 product

2 vendors · 2 products

References

5 links