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CWE-280Weakness · CWE-280

CVE-2026-41566

CRITICAL · 9.4 CVSS v4.0 Published 2026-06-25
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
98/100
Remediation priority · Urgent
Remotely reachable

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Improper Handling of Insufficient Permissions or Privileges vulnerability in Apache Kvrocks. This issue affects Apache Kvrocks: 2.8.0. Users are recommended to upgrade to version 2.16.0, which fixes the issue.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Improper handling of insufficient permissions or privileges in Apache Kvrocks 2.8.0 allows authenticated users to perform operations beyond their intended permission level, potentially leading to unauthorized data access or administrative actions.

MitigationUpgrade Apache Kvrocks from version 2.8.0 to version 2.16.0 or later to resolve the improper privilege handling vulnerability.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
Authentication
X
User interaction
P
Scope
X

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:I/V:X/RE:M/U:Amber

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Apache Kvrocks installation
    Run the command 'kvrocks --version' or check the binary version to determine the installed version of Apache Kvrocks
    Affected if The installed version is 2.8.0 or higher but lower than 2.16.0
  2. Verify authentication is enabled
    Examine the kvrocks configuration file (typically kvrocks.conf) and look for 'requirepass' or ACL-related settings to confirm user authentication is configured
    Affected if Authentication is enabled and the version falls within the vulnerable range (2.8.0 to < 2.16.0)
  3. Confirm role-based access control configuration
    Review kvrocks.conf for 'acl-file' directive or check if ACL rules are defined. Inspect any defined user roles and their permission levels using the ACL LIST or ACL GETUSER commands if accessible
    Affected if ACL or role-based access controls are configured and the version is within the affected range, making the privilege bypass vulnerability applicable

You are affected if Apache Kvrocks version 2.8.0 through 2.15.x is installed with authentication and authorization controls enabled, as the vulnerability allows authenticated users to bypass assigned permission boundaries.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade Apache Kvrocks from version 2.8.0 to version 2.16.0 or later to resolve the improper privilege handling vulnerability.

Recommended fix High confidence

2.16.0

  1. 1. Back up the current Kvrocks data directory and configuration files before proceeding with the upgrade.
  2. 2. Stop the running Kvrocks service (e.g., systemctl stop kvrocks or kill the kvrocks process).
  3. 3. Download Kvrocks version 2.16.0 from the official Apache Kvrocks releases (e.g., from GitHub or Apache mirrors).
  4. 4. Install or replace the Kvrocks binary with version 2.16.0, ensuring the binary is executable and properly placed in the installation directory.
  5. 5. Review the configuration file for any deprecated settings or required updates between versions 2.8.0 and 2.16.0.
  6. 6. Start the Kvrocks service and verify it launches successfully.
  7. 7. Monitor the Kvrocks logs for any errors or warnings during startup and initial operation.
  8. 8. Verify that all expected functionality is working correctly and that data integrity is maintained.
Caveat Major version jumps may introduce breaking changes; review the release notes for 2.16.0 to identify any configuration or behavioral changes from 2.8.0

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-41566 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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