CVE-2024-10973

Information disclosure via ignored JGroups mTLS option

Published Dec 17, 2024 · Updated Aug 8, 2026

Cleartext transmission in Keycloak 25.0.0 through 26.0.5 allows attackers to read JGroups replication data on adjacent networks. CacheManagerFactory passes an unprefixed property name to Configuration.isTrue, so KC_CACHE_EMBEDDED_MTLS_ENABLED resolves to false and TLS is not configured. The flaw requires access to the adjacent JGroups network and an embedded-cache deployment that enables mTLS; the reported impact is disclosure only.

CVSS severity5.7
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in Keycloak 25.0.0 through 26.0.5 allows attackers to read JGroups replication data on adjacent networks. CacheManagerFactory passes an unprefixed property name to Configuration.isTrue, so KC_CACHE_EMBEDDED_MTLS_ENABLED resolves to false and TLS is not configured. The flaw requires access to the adjacent JGroups network and an embedded-cache deployment that enables mTLS; the reported impact is disclosure only.

The record

CVE
CVE-2024-10973
Published
Dec 17, 2024
Updated
Aug 8, 2026
Vendor
Keycloak
Product
Keycloak
Classifications
CWE-319, T1040
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Keycloak · KeycloakAffected versions are unavailable in this record.

Published CVSS scores

5.7Red HatCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T1040Network Sniffing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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