Incorrect Authorization Affecting python-oauthlib package, versions <3.2.2-3+e2


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.31% (25th percentile)

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  • Snyk IDSNYK-ECHOLATEST-PYTHONOAUTHLIB-21884790
  • published30 Oct 2026
  • disclosed28 Oct 2026

Introduced: 28 Oct 2026

NewCVE-2026-118669  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

Upgrade Echo:latest python-oauthlib to version 3.2.2-3+e2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-oauthlib package and not the python-oauthlib package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. Prior to 4.0.0, the client_credentials and Resource Owner Password Credentials token grant handlers can authenticate request.client as one confidential client while retaining an attacker-supplied request.client_id for validate_grant_type and validate_scopes. A lower-privilege authenticated client can therefore cause grant and scope authorization to use another client's identity when an application validator relies on the documented client_id argument, potentially issuing tokens with unauthorized grants or scopes. Validators that authorize exclusively from request.client may not be affected. This issue is fixed in version 4.0.0.

CVSS Base Scores

version 3.1