CVE-2026-32716

HIGH

SciTokens: Authorization Bypass via Incorrect Scope Path Prefix Checking

Title source: cna

Description

SciTokens is a reference library for generating and using SciTokens. Prior to version 1.9.6, the Enforcer incorrectly validates scope paths by using a simple prefix match (startswith). This allows a token with access to a specific path (e.g., /john) to also access sibling paths that start with the same prefix (e.g., /johnathan, /johnny), which is an Authorization Bypass. This issue has been patched in version 1.9.6.

References (3)

[X_Refsource_Confirm] https://github.com/scitokens/scitokens/security/advisories/GHSA-w8fp-g9rh-34jh

[X_Refsource_Misc] https://github.com/scitokens/scitokens/commit/7a237c0f642efb9e8c36ac564b745895cca83583

View Writeup ZIP pw:eip

[X_Refsource_Misc] https://github.com/scitokens/scitokens/releases/tag/v1.9.6

Scores

CVSS v3 8.1

EPSS 0.0001

EPSS Percentile 1.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact total

Details

CWE

CWE-285

Status published

Products (3)

pypi/scitokens 0 - 1.9.6PyPI

scitokens/scitokens < 1.9.6

scitokens/scitokens_library < 1.9.6

Published Mar 31, 2026

Tracked Since Mar 31, 2026