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    8 vulnerabilities found for Red Hat Certificate System 9 by Red Hat

    CVE-2026-18369 (GCVE-0-2026-18369)

    Vulnerability from nvd – Published: 2026-07-30 10:32 – Updated: 2026-07-30 13:43
    VLAI
    Title
    Dogtag-pki: pki-core: redhat-pki: pki: acme http-01 validation ssrf via ip literal identifiers and unvalidated redirects
    Summary
    A flaw was found in Dogtag PKI's ACME responder where the HTTP-01 challenge validator accepts IP address literals as dns identifiers and follows HTTP redirects without validating that the target is a public address. An unauthenticated ACME account holder can exploit this to perform server-side request forgery (SSRF), making the Dogtag server send HTTP GET requests to internal network services. With the InMemory database backend, the response body of internal targets is disclosed to the attacker through the ACME challenge error.
    Severity
    5.8 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-30 13:43 UTC
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
    URL Tags
    https://access.redhat.com/security/cve/CVE-2026-18369 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2509234 issue-trackingx_refsource_REDHAT
    Impacted products
    Date Public
    2026-07-30 10:02
    Show details on NVD website
    To clipboard 

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    CVE-2026-18047 (GCVE-0-2026-18047)

    Vulnerability from nvd – Published: 2026-07-28 12:44 – Updated: 2026-07-28 13:26
    VLAI
    Title
    Dogtag-pki: pki-core: redhat-pki: pki: acme admin enable/disable endpoint authentication bypass via trailing slash
    Summary
    A flaw was found in Dogtag PKI's ACME responder where the web.xml security constraints use exact URL pattern matching for admin-only enable/disable endpoints. By appending a trailing slash to the URL, an unauthenticated attacker can bypass the Tomcat authentication constraint while RESTEasy still routes the request to the handler, allowing unauthorized toggling of the ACME service state including persistent denial of service.
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-28 13:26 UTC
    CWE
    • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
    Assigner
    References
    URL Tags
    https://access.redhat.com/security/cve/CVE-2026-18047 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2507956 issue-trackingx_refsource_REDHAT
    Impacted products
    Date Public
    2026-07-28 10:36
    Show details on NVD website
    To clipboard 

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    CVE-2026-17039 (GCVE-0-2026-17039)

    Vulnerability from nvd – Published: 2026-07-24 15:12 – Updated: 2026-07-25 00:53
    VLAI
    Title
    Pki-core: dogtag-pki: redhat-pki: pki-core: ca renewal request processing omits realm authorization check performed by enrollment path
    Summary
    A flaw was found in pki-core. The certificate authority (CA) renewal request path does not perform the realm-based authorization check that the enrollment path performs, allowing an authenticated user entitled to one realm to cause a certificate belonging to a different realm to be renewed without that realm's authorization.
    Severity
    3.1 (Low)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-25 00:53 UTC
    CWE
    • CWE-863 - Incorrect Authorization
    Assigner
    References
    Impacted products
    Date Public
    2026-07-24 00:00
    Credits
    Red Hat would like to thank Arpit Jain (Github: arpitjain099) for reporting this issue.
    Show details on NVD website
    To clipboard 

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    CVE-2026-12353 (GCVE-0-2026-12353)

    Vulnerability from nvd – Published: 2026-07-23 19:10 – Updated: 2026-07-24 22:05
    VLAI
    Title
    Rhcs: memory leak during https connection leads to denial of service
    Summary
    An unauthenticated attacker could trigger an Out of Memory condition to crash the Java process for RHCS by repeatedly sending HTTP requests to the TLS endpoint. Depending on how the RHCS server is configured, a manual intervention to restart it may prove necessary.
    Severity
    5.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-24 22:05 UTC
    CWE
    • CWE-772 - Missing Release of Resource after Effective Lifetime
    Assigner
    References
    URL Tags
    https://access.redhat.com/security/cve/CVE-2026-12353 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2489056 issue-trackingx_refsource_REDHAT
    Impacted products
    Date Public
    2026-06-15 00:00
    Credits
    This issue was discovered by Thibault Guittet (Red Hat).
    Show details on NVD website
    To clipboard 

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    CVE-2026-18369 (GCVE-0-2026-18369)

    Vulnerability from cvelistv5 – Published: 2026-07-30 10:32 – Updated: 2026-07-30 13:43
    VLAI
    Title
    Dogtag-pki: pki-core: redhat-pki: pki: acme http-01 validation ssrf via ip literal identifiers and unvalidated redirects
    Summary
    A flaw was found in Dogtag PKI's ACME responder where the HTTP-01 challenge validator accepts IP address literals as dns identifiers and follows HTTP redirects without validating that the target is a public address. An unauthenticated ACME account holder can exploit this to perform server-side request forgery (SSRF), making the Dogtag server send HTTP GET requests to internal network services. With the InMemory database backend, the response body of internal targets is disclosed to the attacker through the ACME challenge error.
    Severity
    5.8 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-30 13:43 UTC
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
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    https://bugzilla.redhat.com/show_bug.cgi?id=2509234 issue-trackingx_refsource_REDHAT
    Impacted products
    Date Public
    2026-07-30 10:02
    Show details on NVD website
    To clipboard 

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    CVE-2026-18047 (GCVE-0-2026-18047)

    Vulnerability from cvelistv5 – Published: 2026-07-28 12:44 – Updated: 2026-07-28 13:26
    VLAI
    Title
    Dogtag-pki: pki-core: redhat-pki: pki: acme admin enable/disable endpoint authentication bypass via trailing slash
    Summary
    A flaw was found in Dogtag PKI's ACME responder where the web.xml security constraints use exact URL pattern matching for admin-only enable/disable endpoints. By appending a trailing slash to the URL, an unauthenticated attacker can bypass the Tomcat authentication constraint while RESTEasy still routes the request to the handler, allowing unauthorized toggling of the ACME service state including persistent denial of service.
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-28 13:26 UTC
    CWE
    • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
    Assigner
    References
    URL Tags
    https://access.redhat.com/security/cve/CVE-2026-18047 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2507956 issue-trackingx_refsource_REDHAT
    Impacted products
    Date Public
    2026-07-28 10:36
    Show details on NVD website
    To clipboard 

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    CVE-2026-17039 (GCVE-0-2026-17039)

    Vulnerability from cvelistv5 – Published: 2026-07-24 15:12 – Updated: 2026-07-25 00:53
    VLAI
    Title
    Pki-core: dogtag-pki: redhat-pki: pki-core: ca renewal request processing omits realm authorization check performed by enrollment path
    Summary
    A flaw was found in pki-core. The certificate authority (CA) renewal request path does not perform the realm-based authorization check that the enrollment path performs, allowing an authenticated user entitled to one realm to cause a certificate belonging to a different realm to be renewed without that realm's authorization.
    Severity
    3.1 (Low)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-25 00:53 UTC
    CWE
    • CWE-863 - Incorrect Authorization
    Assigner
    References
    Impacted products
    Date Public
    2026-07-24 00:00
    Credits
    Red Hat would like to thank Arpit Jain (Github: arpitjain099) for reporting this issue.
    Show details on NVD website
    To clipboard 

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    CVE-2026-12353 (GCVE-0-2026-12353)

    Vulnerability from cvelistv5 – Published: 2026-07-23 19:10 – Updated: 2026-07-24 22:05
    VLAI
    Title
    Rhcs: memory leak during https connection leads to denial of service
    Summary
    An unauthenticated attacker could trigger an Out of Memory condition to crash the Java process for RHCS by repeatedly sending HTTP requests to the TLS endpoint. Depending on how the RHCS server is configured, a manual intervention to restart it may prove necessary.
    Severity
    5.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-24 22:05 UTC
    CWE
    • CWE-772 - Missing Release of Resource after Effective Lifetime
    Assigner
    References
    URL Tags
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    https://bugzilla.redhat.com/show_bug.cgi?id=2489056 issue-trackingx_refsource_REDHAT
    Impacted products
    Date Public
    2026-06-15 00:00
    Credits
    This issue was discovered by Thibault Guittet (Red Hat).
    Show details on NVD website
    To clipboard 

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    "dateReserved": "2026-06-15T21:27:58.344Z",
    "dateUpdated": "2026-07-24T22:05:19.900Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}