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    CVE-2026-40011

    An attacker sending a large number of crafted DNS queries might be able to trigger a dynamic block being inserted with a value causing invalid output to be produced in the prometheus endpoint. The prometheus endpoint will then be rejected by the scraper until the dynamic block expires.

    Published:Jun 25, 2026
    Last Modified:Jun 25, 2026
    EPS:Jun 25, 2026
    EPSS Score:
    CVSS Score:3.7

    Affected Products

    Vendor
    Powerdns
    Product
    Dnsdist

    Exploits

    No exploit reference

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    CVE-2026-33593 (CVSS 7.5) — A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query.…
    CVE-2026-33594 (CVSS 5.3) — A client can trigger excessive memory allocation by generating a lot of queries that are routed to an overload…
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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