CVE-2022-39366Network attack vector

Authentication bypass via unsigned JWT acceptance

Published Oct 28, 2022 · Updated Apr 22, 2025

Authentication bypass in DataHub before 0.8.45 allows remote attackers to act as any user through a forged JWT when GMS authentication is enabled. StatelessTokenService passes untrusted tokens to JwtParser.parse, which parses JWT contents without verifying the cryptographic signature or algorithm. The flaw is reachable only when Metadata Service authentication is enabled and grants the forged identity that user's DataHub permissions.

CVSS severity9.9
Critical
EPSS probability0.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in DataHub before 0.8.45 allows remote attackers to act as any user through a forged JWT when GMS authentication is enabled. StatelessTokenService passes untrusted tokens to JwtParser.parse, which parses JWT contents without verifying the cryptographic signature or algorithm. The flaw is reachable only when Metadata Service authentication is enabled and grants the forged identity that user's DataHub permissions.

The record

CVE
CVE-2022-39366
Published
Oct 28, 2022
Updated
Apr 22, 2025
Vendor
DataHub
Product
DataHub
Classifications
CWE-303, CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.8.45

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DataHub · DataHubversion=< 0.8.45

Published CVSS scores

9.9GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-303Incorrect Implementation of Authentication Algorithm
CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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