PT-2026-53349 · Pypi · Acryl-Datahub

Published 2026-06-29 · Updated 2026-06-29

OSV

CVSS v3.1

9.9

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:L

Missing JWT signature check (GHSL-2022-078)

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.

Impact

This issue may lead to an authentication bypass.

Resources

• CodeQL: Missing JWT signature check

Fix

Related Identifiers

PYSEC-2026-252

Affected Products

Acryl-Datahub

References · 10

• https://osv.dev/vulnerability/PYSEC-2026-252 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-39366 · Security Note
• https://github.com/datahub-project/datahub/blob/aa146db611e3a4ca3aa17bb740783f789d4444d3/metadata-service/auth-impl/src/main/java/com/datahub/authentication/token/StatelessTokenService.java#L30 · Note
• https://github.com/datahub-project/datahub · Note
• https://github.com/datahub-project/datahub/releases/tag/v0.8.45 · Note
• https://github.com/datahub-project/datahub/blob/aa146db611e3a4ca3aa17bb740783f789d4444d3/metadata-service/auth-impl/src/main/java/com/datahub/authentication/token/StatelessTokenService.java#L134 · Note
• https://github.com/datahub-project/datahub/security/advisories/GHSA-r8gm-v65f-c973 · Note
• https://github.com/advisories/GHSA-r8gm-v65f-c973 · Note
• https://pypi.org/project/acryl-datahub · Note
• https://codeql.github.com/codeql-query-help/java/java-missing-jwt-signature-check · Note