CVE-2020-14302: redhat keycloak Authentication Bypass by Capture-replay
CVSS: 4.9v3.1MediumModified
Published 15-12-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-14302 is a medium (CVSS 4.9) Authentication Bypass by Capture-replay vulnerability in redhat keycloak. EPSS estimates a 1.00% chance of exploitation in the next 30 days, higher than 62.3% of scored vulnerabilities.
CVSS score
4.9/10
010
Medium · v3.1 (NVD)EPSS score
1.00%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 3Timeline
- 15-12-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in Keycloak before 13.0.0 where an external identity provider, after successful authentication, redirects to a Keycloak endpoint that accepts multiple invocations with the use of the same "state" parameter. This flaw allows a malicious user to perform replay attacks.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 4.9Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:NSourcesSingle source
Medium 4.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
1.00%
Chance of exploitation in the next 30 days
Percentile
62%
Versus all other CVEs
30-day change
0.00 pp
From 1.00% on 19-09-2026
19-09-202619-10-2026
EPSS score1.00%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat1 product
- keycloak< 13.0.0
1 vendor · 1 product