CVE-2026-7307: Improper Validation of Syntactic Correctness of Input in Red Hat Red Hat Build of Keycloak
CVE-2026-7307 is a vulnerability in Red Hat Build of Keycloak where improper validation of XML input at the SAML endpoint allows a remote, unauthenticated attacker to cause high CPU usage and worker thread starvation. This results in a Denial of Service (DoS) condition, making the server unavailable. The vulnerability has a CVSS score of 7. 5 (high severity). There is no explicit vendor advisory content indicating a patch or mitigation status at this time.
AI Analysis
Technical Summary
This vulnerability involves improper validation of syntactic correctness of XML input sent to the SAML endpoint in Red Hat Build of Keycloak. An attacker can exploit this by sending specially crafted XML data that causes excessive CPU consumption and thread starvation, leading to a denial of service. The vulnerability is remotely exploitable without authentication and does not impact confidentiality or integrity, only availability.
Potential Impact
Successful exploitation results in a denial of service condition where the Keycloak server becomes unavailable due to resource exhaustion (high CPU usage and thread starvation). There is no indication of data compromise or privilege escalation. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://access.redhat.com/security/cve/CVE-2026-7307 for current remediation guidance. No official fix or workaround is explicitly stated in the provided advisory content. Users should monitor the vendor advisory for updates and apply patches or mitigations once available.
CVE-2026-7307: Improper Validation of Syntactic Correctness of Input in Red Hat Red Hat Build of Keycloak
Description
CVE-2026-7307 is a vulnerability in Red Hat Build of Keycloak where improper validation of XML input at the SAML endpoint allows a remote, unauthenticated attacker to cause high CPU usage and worker thread starvation. This results in a Denial of Service (DoS) condition, making the server unavailable. The vulnerability has a CVSS score of 7. 5 (high severity). There is no explicit vendor advisory content indicating a patch or mitigation status at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper validation of syntactic correctness of XML input sent to the SAML endpoint in Red Hat Build of Keycloak. An attacker can exploit this by sending specially crafted XML data that causes excessive CPU consumption and thread starvation, leading to a denial of service. The vulnerability is remotely exploitable without authentication and does not impact confidentiality or integrity, only availability.
Potential Impact
Successful exploitation results in a denial of service condition where the Keycloak server becomes unavailable due to resource exhaustion (high CPU usage and thread starvation). There is no indication of data compromise or privilege escalation. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://access.redhat.com/security/cve/CVE-2026-7307 for current remediation guidance. No official fix or workaround is explicitly stated in the provided advisory content. Users should monitor the vendor advisory for updates and apply patches or mitigations once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-04-28T11:51:30.176Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-7307","vendor":"Red Hat"}]
Threat ID: 6a0c47d9ec166c07b097b831
Added to database: 5/19/2026, 11:22:01 AM
Last enriched: 5/19/2026, 11:36:51 AM
Last updated: 5/19/2026, 1:46:24 PM
Views: 5
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