CVE-2025-59390
Apache Druid: Kerberos authenticaton chooses a cryptographically unsecure secret if not configured explicitly.
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.kerberos.cookieSignatureSecret when using the Kerberos authenticator. Services will fail to come up if the secret is not set.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
9.8
Apache Druid: Kerberos authenticaton chooses a cryptographically unsecure secret if not configured explicitly.
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.kerberos.cookieSignatureSecret when using the Kerberos authenticator. Services will fail to come up if the secret is not set.
- Record
CVE-2025-59390- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-338
- Updated
- 2026-11-02
EUVDEUVD-2025-199714
9.8
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.kerberos.cookieSignatureSecret when using the Kerberos authenticator. Services will fail to come up if the secret is not set.
- Record
EUVD-2025-199714- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-w88f-4875-99c8
9.8
Apache Druid’s Kerberos authenticator uses a weak fallback secret
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.kerberos.cookieSignatureSecret when using the Kerberos authenticator. Services will fail to come up if the secret is not set.
- Record
GHSA-w88f-4875-99c8- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-338
- Updated
- 2026-11-02
NVD
9.8
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.kerberos.cookieSignatureSecret when using the Kerberos authenticator. Services will fail to come up if the secret is not set.
- Record
CVE-2025-59390- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-338
- Updated
- 2026-11-02
OSV
9.8
Apache Druid: Kerberos authenticaton chooses a cryptographically unsecure secret if not configured explicitly.
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.kerberos.cookieSignatureSecret when using the Kerberos authenticator. Services will fail to come up if the secret is not set.
- Record
CVE-2025-59390- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-338
- Updated
- 2026-11-02
OSVGHSA-w88f-4875-99c8
9.8
Apache Druid’s Kerberos authenticator uses a weak fallback secret
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.kerberos.cookieSignatureSecret when using the Kerberos authenticator. Services will fail to come up if the secret is not set.
- Record
GHSA-w88f-4875-99c8- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-338
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.apache.druid:druidMaven |
before 35.0.0 | 35.0.0 |
org.apache.druid:druidMaven |
before 35.0.0, plus listed versions 0.13.0-incubating0.14.0-incubating0.14.1-incubating0.14.2-incubating0.15.0-incubating Show 35 moreShow less0.15.1-incubating0.16.0-incubating0.16.1-incubating0.17.00.17.10.18.00.18.10.19.00.20.00.20.10.20.20.21.00.21.10.22.00.22.10.23.024.0.024.0.124.0.225.0.026.0.027.0.028.0.028.0.129.0.029.0.130.0.030.0.131.0.031.0.131.0.232.0.032.0.133.0.034.0.0 |
35.0.0 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | Daeda1usUK/CVE-2025-59390- | 2025-11-28 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-59390 is a critical vulnerability (CVSS 9.8) in Apache Druid, published November 26, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.70%, the 53rd percentile. Fixed in org.apache.druid:druid 35.0.0.
References
lists.apache.org/thread/jwjltllnntgj1sb9wzsjmvwm9f8rlhg8
openwall.com/lists/oss-security/2025/11/26/1
nvd.nist.gov/vuln/detail/CVE-2025-59390
github.com/apache/druid/pull/18368
github.com/advisories/GHSA-w88f-4875-99c8
github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59390.json
github.com/apache/druid