CVE-2025-59390
9.8 · CRITICALOverview
CVE-2025-59390 is a critical-severity vulnerability affecting apache druid. It was published on November 26, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Apache Druid’s Kerberos authenticator uses a weak fallback secret when the `druid.auth.authenticator.kerberos.cookieSignatureSecret` configuration is not explicitly set. In this case, the secret is generated using `ThreadLocalRandom`,
which is not a crypto-graphically secure random number generator. This
may allow an attacker to predict or brute force the secret used to sign
authentication cookies, potentially enabling token forgery or
authentication bypass. Additionally, each process generates its own
fallback secret, resulting in inconsistent secrets across nodes. This
causes authentication failures in distributed or multi-broker
deployments, effectively leading to a incorrectly configured clusters. Users are
advised to configure a strong `druid.auth.authenticator.kerberos.cookieSignatureSecret`
This issue affects Apache Druid: through 34.0.0.
Users are recommended to upgrade to version 35.0.0, which fixes the issue making it mandatory to set `druid.auth.authenticator.ker
Remediation
Check the references section for vendor advisories and patches from apache. Update druid to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| apache | druid | >= 0, < 35.0.0 | Affected |
Frequently Asked Questions
What is CVE-2025-59390?
CVE-2025-59390 is a critical-severity vulnerability affecting apache druid. It was published on November 26, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2025-59390?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2025-59390?
Check the references section for vendor advisories and patches from apache. Update druid to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-59390?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-59390 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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