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    CVE-2026-18047

    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.

    Published:Jul 28, 2026
    Last Modified:Jul 28, 2026
    EPS:Jul 28, 2026
    EPSS Score:
    CVSS Score:6.5

    Affected Products

    Vendor
    Redhat
    Product
    Certificate System
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-127 Directory Indexing
    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

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    CVE-2026-78323 (CVSS 6.5) — A flaw was found in JSS (Java Security Services). The JSSTrustManager class does not verify NSS trust flags wh…
    CVE-2026-18369 (CVSS 5.8) — A flaw was found in Dogtag PKI's ACME responder where the HTTP-01 challenge validator accepts IP address liter…
    CVE-2026-17039 (CVSS 3.1) — A flaw was found in pki-core. The certificate authority (CA) renewal request path does not perform the realm-b…
    CVE-2026-12353 (CVSS 5.3) — An unauthenticated attacker could trigger an Out of Memory condition to crash the Java process for RHCS by rep…
    CVE-2022-2393 (CVSS 5.7) — A flaw was found in pki-core, which could allow a user to get a certificate for another user identity when dir…
    CVE-2022-2414 (CVSS 7.5) — Access to external entities when parsing XML documents can lead to XML external entity (XXE) attacks. This fla…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High