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CVE-2020-1744

16
FAUCET Score

CVE-2020-1744 describes a flaw in Red Hat Keycloak versions prior to 9.0.1 where failed One-Time Password (OTP) login attempts, when configured as a post-login flow for an Identity Provider, are not properly sent to the brute force protection event queue. This oversight prevents the BruteForceProtector from addressing these events, potentially allowing an attacker to bypass brute-force protection mechanisms. The vulnerability has a CVSS score of 5.6 (Medium), indicating a network-based attack with high attack complexity, resulting in low impacts to confidentiality, integrity, and availability. There is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 9.0.1CPE matchmatch criteria
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.6MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.09%
Probability of exploitation in next 30 days
EPSS Percentile
62.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0109 is in the 24th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

mavenpatch availablevia ghsa
Product: org.keycloak:keycloak-coreFixed in: 9.0.1
redhatpatch availablevia redhat_api
Product: Red Hat Runtimes Spring Boot 2.2.6Fixed in: keycloak
View patch
redhatpatch availablevia redhat_api
Product: Text-Only RHOAR
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.3 for RHEL 6Fixed in: rh-sso7-keycloak-0:4.8.18-1.Final_redhat_00001.1.el6sso
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.3 for RHEL 7Fixed in: rh-sso7-keycloak-0:4.8.18-1.Final_redhat_00001.1.el7sso
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.3 for RHEL 8Fixed in: rh-sso7-keycloak-0:4.8.18-1.Final_redhat_00001.1.el8sso
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.3
View patch
redhatvendor investigatingvia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat OpenShift Application RuntimesFixed in: keycloak
redhatno patchvia redhat_api
Product: Red Hat support for Spring BootFixed in: keycloak

Vendor Advisories (2)

mavenGHSA-4gf2-xv97-63m2medium

Exposure of Sensitive Information in keycloak

Sep 20, 2021
redhatCVE-2020-1744Moderate

keycloak: failedLogin Event not sent to BruteForceProtector when using Post Login Flow with Conditional-OTP

Mar 23, 2020

References

access.redhat.com / security/cve/CVE-2020-1744
Vendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingVendor Advisory