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CVE-2020-15125

Authorization header is not sanitized in an error object in auth0

7.7 HighFix available

In auth0 (npm package) versions before 2.27.1, a DenyList of specific keys that should be sanitized from the request object contained in the error object is used. The key for Authorization header is not sanitized and in certain cases the Authorization header value can be logged exposing a bearer token. You are affected by this vulnerability if you are using the auth0 npm package, and you are using a Machine to Machine application authorized to use Auth0's management API

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

1.54%Up 0.5 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 7.7

Authorization header is not sanitized in an error object in auth0

In auth0 (npm package) versions before 2.27.1, a DenyList of specific keys that should be sanitized from the request object contained in the error object is used. The key for Authorization header is not sanitized and in certain cases the Authorization header value can be logged exposing a bearer token. You are affected by this vulnerability if you are using the auth0 npm package, and you are using a Machine to Machine application authorized to use Auth0's management API

Record
CVE-2020-15125
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness
CWE-209
Updated
2026-11-02
EUVDEUVD-2020-0538 7.7

In auth0 (npm package) versions before 2.27.1, a DenyList of specific keys that should be sanitized from the request object contained in the error object is used. The key for Authorization header is not sanitized and in certain cases the Authorization header value can be logged exposing a bearer token. You are affected by this vulnerability if you are using the auth0 npm package, and you are using a Machine to Machine application authorized to use Auth0's management API

Record
EUVD-2020-0538
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-5jpf-pj32-xx53 7.7

Authorization header is not sanitized in an error object in auth0

Overview

Versions before and including 2.27.0 use a block list of specific keys that should be sanitized from the request object contained in the error object. When a request to Auth0 management API fails, the key for Authorization header is not sanitized and the Authorization header value can be logged exposing a bearer token.

Am I affected?

You are affected by this vulnerability if all of the following conditions apply:

How to fix that?

Upgrade to version 2.27.1

Will this update impact my users?

The fix provided in patch will not affect your users.

Credit

http://github.com/osdiab

Record
GHSA-5jpf-pj32-xx53
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness
CWE-209
Updated
2026-11-02
NVD 7.7

In auth0 (npm package) versions before 2.27.1, a DenyList of specific keys that should be sanitized from the request object contained in the error object is used. The key for Authorization header is not sanitized and in certain cases the Authorization header value can be logged exposing a bearer token. You are affected by this vulnerability if you are using the auth0 npm package, and you are using a Machine to Machine application authorized to use Auth0's management API

Record
CVE-2020-15125
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS 2.0
4.0 MediumAV:N/AC:L/Au:S/C:P/I:N/A:N
Weakness
CWE-209
Updated
2026-11-02
OSV 7.7

In auth0 (npm package) versions before 2.27.1, a DenyList of specific keys that should be sanitized from the request object contained in the error object is used. The key for Authorization header is not sanitized and in certain cases the Authorization header value can be logged exposing a bearer token. You are affected by this vulnerability if you are using the auth0 npm package, and you are using a Machine to Machine application authorized to use Auth0's management API

Record
CVE-2020-15125
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Updated
2026-11-02
OSVGHSA-5jpf-pj32-xx53 7.7

Authorization header is not sanitized in an error object in auth0

Overview

Versions before and including 2.27.0 use a block list of specific keys that should be sanitized from the request object contained in the error object. When a request to Auth0 management API fails, the key for Authorization header is not sanitized and the Authorization header value can be logged exposing a bearer token.

Am I affected?

You are affected by this vulnerability if all of the following conditions apply:

How to fix that?

Upgrade to version 2.27.1

Will this update impact my users?

The fix provided in patch will not affect your users.

Credit

http://github.com/osdiab

Record
GHSA-5jpf-pj32-xx53
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness
CWE-209
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
auth0
npm
before 2.27.1
2.27.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-15125 is a high vulnerability (CVSS 7.7) in Auth0 Auth0.js, published July 29, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.54%, the 75th percentile. Fixed in auth0 2.27.1.

References

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