Security readout for executives and security teams
Plain-English summary
A Keycloak administrator with realm-setting privileges can make the service reject requests by placing newline characters in security-header settings. The result is loss of availability, not disclosed data theft or modification. Because exploitation requires an authenticated, privileged account, the main risk comes from compromised or malicious administrators.
Executive priority
Prioritize remediation on identity infrastructure running the listed affected packages, especially where many applications depend on Keycloak availability. Treat this as a prompt maintenance item rather than an unauthenticated emergency. Immediately investigate if administrator credentials may be compromised or security-header settings changed unexpectedly.
Technical view
Improper handling of newline characters in configured security headers can cause Keycloak to write to a request after it has terminated, making that request fail. CVSS 3.1 rates it 6.5: network-accessible, low complexity, low privileges, no user interaction, and high availability impact. The supplied record maps specific Red Hat build packages to affected releases.
Likely exposure
Exposure is limited to deployments running the specifically listed affected Red Hat build packages: 26.0.8-1 operator bundle, 26.0-7 RHEL9 package, or 26.0-8 RHEL9 operator. An attacker must hold realm-setting privileges. The bundle marks several related products unaffected; other versions cannot be inferred from this evidence.
Exploitation context
The supplied sources do not establish active exploitation, and the CVE is not listed as KEV in the bundle. Abuse requires an authenticated administrative user authorized to change realm settings, making compromised administrator credentials, excessive privileges, or insider misuse the credible scenarios. No public exploit status is established here.
Researcher notes
The described failure is availability-only and corresponds to CWE-693. Privilege wording is important: the description says an administrative user with rights to change realm settings, while the CVSS vector records PR:L. The bundle contains mixed affected and unaffected Red Hat entries, so package-level identification is necessary; broader upstream Keycloak impact should not be assumed.
Mitigation direction
- Apply the applicable Red Hat security update identified in RHSA-2025:0299 or RHSA-2025:0300.
- Review Red Hat's CVE guidance to confirm the correct update for each deployed package.
- Restrict realm-setting privileges to administrators who operationally require them.
- Review configured security headers and remove unexpected newline-containing values.
- Monitor privileged realm-setting changes until affected deployments are updated.
Validation and detection
- Inventory Keycloak products, package names, and exact installed versions.
- Compare installed packages with the affected and unaffected entries in the CVE record.
- Confirm the applicable Red Hat advisory update is installed.
- Audit realm configuration for unexpected security-header changes or newline characters.
- Review authentication and administrative audit records for suspicious realm-setting activity.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-693: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2024-11734 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H2.83.6redhatVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- Source timelineredhat
Reported to Red Hat.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Source timelineredhat
Made public.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- RHSA-2025:0299CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- RHSA-2025:0300CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2024-11734CVE reference, redhat · vdb-entry, x_refsource_REDHAT
- RHBZ#2328846CVE reference, redhat · issue-tracking, x_refsource_REDHAT
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Protection Mechanism Failure
Protection Mechanism Failure represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.