6.5

CVE-2020-10686: keycloak Improper Authorization

CVSS: 6.5v2.0MediumModified
AliasesGHSA-9695-w6h2-jpv9
Published 04-05-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-10686 is a medium (CVSS 6.5) Improper Authorization vulnerability in keycloak. EPSS estimates a 0.65% chance of exploitation in the next 30 days, higher than 50.3% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v2.0 (NVD)
EPSS score
0.65%
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. 04-05-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in Keycloak version 8.0.2 and 9.0.0, and was fixed in Keycloak version 9.0.1, where a malicious user registers as oneself. The attacker could then use the remove devices form to post different credential IDs and possibly remove MFA devices for other users.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.65%

Chance of exploitation in the next 30 days

Percentile

50%

Versus all other CVEs

30-day change

0.00 pp

From 0.65% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.65%

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

Keycloak1 product
Org.keycloak1 product
  • keycloak-core< 9.0.2
Redhat1 product

3 vendors · 3 products

References

4 links