What’s Vulnerable › Vulnerabilities

CVE-2022-39366: DataHub missing JWT signature check

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-10-28 · updated 2026-06-17
• Weakness: CWE-287

Description

DataHub is an open-source metadata platform. Prior to version 0.8.45, the `StatelessTokenService` of the DataHub metadata service (GMS) does not verify the signature of JWT tokens. This allows an attacker to connect to DataHub instances as any user if Metadata Service authentication is enabled. This vulnerability occurs because the `StatelessTokenService` of the Metadata service uses the `parse` method of `io.jsonwebtoken.JwtParser`, which does not perform a verification of the cryptographic token signature. This means that JWTs are accepted regardless of the used algorithm. This issue may lead to an authentication bypass. Version 0.8.45 contains a patch for the issue. There are no known workarounds.

Affected products

• datahub-project datahub: before 0.8.45 — fixed in 0.8.45

How to fix

Upgrade to a fixed version: datahub-project datahub 0.8.45. Check the vendor advisory for mitigations.

References

• https://codeql.github.com/codeql-query-help/java/java-missing-jwt-signature-check/
• https://github.com/datahub-project/datahub/blob/aa146db611e3a4ca3aa17bb740783f789d4444d3/metadata-service/auth-impl/src/main/java/com/datahub/authentication/token/StatelessTokenService.java#L134
• https://github.com/datahub-project/datahub/blob/aa146db611e3a4ca3aa17bb740783f789d4444d3/metadata-service/auth-impl/src/main/java/com/datahub/authentication/token/StatelessTokenService.java#L30
• https://github.com/datahub-project/datahub/releases/tag/v0.8.45
• https://github.com/datahub-project/datahub/security/advisories/GHSA-r8gm-v65f-c973
• https://codeql.github.com/codeql-query-help/java/java-missing-jwt-signature-check/
• https://github.com/datahub-project/datahub/blob/aa146db611e3a4ca3aa17bb740783f789d4444d3/metadata-service/auth-impl/src/main/java/com/datahub/authentication/token/StatelessTokenService.java#L134
• https://github.com/datahub-project/datahub/blob/aa146db611e3a4ca3aa17bb740783f789d4444d3/metadata-service/auth-impl/src/main/java/com/datahub/authentication/token/StatelessTokenService.java#L30
• https://github.com/datahub-project/datahub/releases/tag/v0.8.45
• https://github.com/datahub-project/datahub/security/advisories/GHSA-r8gm-v65f-c973

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