CVE-2023-0264: redhat keycloak Improper Authentication
Vulnerability summary
CVE-2023-0264 is a medium (CVSS 5.0) Improper Authentication vulnerability in redhat keycloak. EPSS estimates a 1.27% chance of exploitation in the next 30 days, higher than 69.4% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 3 · Related 2Timeline
- 04-08-2023PublishedVulnerability first disclosed.
- 02-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in Keycloaks OpenID Connect user authentication, which may incorrectly authenticate requests. An authenticated attacker who could obtain information from a user request within the same realm could use that data to impersonate the victim and generate new session tokens. This issue could impact confidentiality, integrity, and availability.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · WolfiEcosystem advisory · calculated5.0MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
- OSV · ChainguardEcosystem advisory · calculated5.0MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
- OSV · MavenEcosystem advisory · calculated8.7HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:NDiffers
EPSS trend
Probability
1.27%
Chance of exploitation in the next 30 days
Percentile
69%
Versus all other CVEs
30-day change
0.00 pp
From 1.27% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat5 products
- keycloak< 18.0.6
- openshift_container_platform4.9 | 4.10
- openshift_container_platform_for_ibm_linuxone4.9 | 4.10
- openshift_container_platform_ibm_z_systems4.9 | 4.10
- single_sign-on< 7.6.2 | na
Chainguard1 product
- keycloakAll versions (No fix recorded)
Org.keycloak1 product
- keycloak-services< 21.0.1
Redhat.com1 product
- keycloak≥ 18.0.6, < 18.0.6
Wolfi1 product
- keycloakAll versions (No fix recorded)
5 vendors · 9 products
References
5 links
- github.com/keycloak/keycloakPACKAGE