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    CVE-2026-119566

    Prometheus through 3.15.1 contains a credential leak vulnerability that allows attackers to capture Azure AD or Google IAM bearer tokens by redirecting remote_write requests to another host. Attackers controlling the remote-write endpoint or a redirecting server can return a 3xx to their host and replay the token, for example to write metrics to the victim's backend.

    Published:Oct 30, 2026
    Last Modified:Oct 30, 2026
    EPS:Oct 30, 2026
    EPSS Score:0.00201
    CVSS Score:4.8

    Affected Products

    Vendor
    Prometheus
    Product
    Prometheus

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-102 Session Sidejacking
    CAPEC-12 Choosing Message Identifier
    CAPEC-217 Exploiting Incorrectly Configured SSL/TLS
    CAPEC-474 Signature Spoofing by Key Theft
    CAPEC-50 Password Recovery Exploitation
    CAPEC-509 Kerberoasting
    CAPEC-551 Modify Existing Service
    CAPEC-555 Remote Services with Stolen Credentials
    CAPEC-560 Use of Known Domain Credentials
    CAPEC-561 Windows Admin Shares with Stolen Credentials
    CAPEC-600 Credential Stuffing
    CAPEC-612 WiFi MAC Address Tracking
    CAPEC-613 WiFi SSID Tracking
    CAPEC-618 Cellular Broadcast Message Request
    CAPEC-619 Signal Strength Tracking
    CAPEC-621 Analysis of Packet Timing and Sizes
    CAPEC-622 Electromagnetic Side-Channel Attack
    CAPEC-623 Compromising Emanations Attack
    CAPEC-644 Use of Captured Hashes (Pass The Hash)
    CAPEC-645 Use of Captured Tickets (Pass The Ticket)
    CAPEC-652 Use of Known Kerberos Credentials
    CAPEC-653 Use of Known Operating System Credentials

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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