CVE-2025-2559
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Org.keycloak/keycloak-services: jwt token cache exhaustion leading to denial of service (dos) in keycloak
A flaw was found in Keycloak. When the configuration uses JWT tokens for authentication, the tokens are cached until expiration. If a client uses JWT tokens with an excessively long expiration time, for example, 24 or 48 hours, the cache can grow indefinitely, leading to an OutOfMemoryError. This issue could result in a denial of service condition, preventing legitimate users from accessing the system.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
keycloak
- Vendor
- Unknown
- Product
- Unknown
- Platforms
- Unknown
- Default status
unaffected- Package
- keycloak
- Package collection
- https://github.com/keycloak/keycloak/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 23.0.0 | affected | semver | 26.0.11 | Unavailable | None listed |
| 26.1.0 | affected | semver | 26.1.5 | Unavailable | None listed |
Red Hat Build of Keycloak
- Vendor
- Red Hat
- Product
- Red Hat Build of Keycloak
- Platforms
- Unknown
- Default status
unaffected- Package
- keycloak-services
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat build of Keycloak 26.0
- Vendor
- Red Hat
- Product
- Red Hat build of Keycloak 26.0
- Platforms
- Unknown
- Default status
affected- Package
- rhbk/keycloak-operator-bundle
- Package collection
- https://catalog.redhat.com/software/containers/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 26.0.11-2 | unaffected | rpm | * | Unavailable | None listed |
Red Hat build of Keycloak 26.0
- Vendor
- Red Hat
- Product
- Red Hat build of Keycloak 26.0
- Platforms
- Unknown
- Default status
affected- Package
- rhbk/keycloak-rhel9
- Package collection
- https://catalog.redhat.com/software/containers/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 26.0-12 | unaffected | rpm | * | Unavailable | None listed |
Red Hat build of Keycloak 26.0
- Vendor
- Red Hat
- Product
- Red Hat build of Keycloak 26.0
- Platforms
- Unknown
- Default status
affected- Package
- rhbk/keycloak-rhel9-operator
- Package collection
- https://catalog.redhat.com/software/containers/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 26.0-13 | unaffected | rpm | * | Unavailable | None listed |
Red Hat Single Sign-On 7
- Vendor
- Red Hat
- Product
- Red Hat Single Sign-On 7
- Platforms
- Unknown
- Default status
affected- Package
- keycloak-services
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.