Vulnerability · Published Oct 28, 2022 · Assigned by GitHub_M

CVE-2022-39366DataHub missing JWT signature check

Critical 9.9

In plain English

A critical-severity improper authentication in datahub from datahub-project. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.9Critical

Exploit odds (30 days)1.1%top 33.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	acryl-datahub	0.8.45	GHSA-r8gm-v65f-c973
PyPI	acryl-datahub	0.8.45	PYSEC-2026-252

Affected products (as reported)

Vendor	Product	Versions
datahub-project	datahub	< 0.8.45

Weakness: CWE-303, CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:L

In plain English

Official description

Affected packages & fixed versions

Affected products (as reported)

References