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TI-2026-25208 Aliases CVE-2026-32716GHSA-w8fp-g9rh-34jh

SciTokens: Authorization Bypass via Incorrect Scope Path Prefix Checking

Priority HIGH 70CWE-285Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-285.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00396 34th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed scitokens (scitokens): 1.9.6scitokens (PyPI): 1.9.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
scitokensscitokensbefore 1.9.61.9.6Patch availableCNA
—scitokens (PyPI)before 1.9.61.9.6Patch availableGHSA-w8fp-g9rh-34jh
  • scitokens Vendorscitokens Affected before 1.9.6 Fixed in 1.9.6 Patch available CNA
  • scitokens (PyPI) Vendor— Affected before 1.9.6 Fixed in 1.9.6 Patch available GHSA-w8fp-g9rh-34jh

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:scitokens:scitokens_library:*:*:*:*:*:*:*:*before 1.9.6Vulnerablescitokens
  • cpe:2.3:a:scitokens:scitokens_library:*:*:*:*:*:*:*:* Versions before 1.9.6 Vulnerable ·scitokens

Remediation

  • Fix · CNA scitokens (scitokens) Fixed in 1.9.6
  • Fix · GHSA-w8fp-g9rh-34jh scitokens (PyPI) Fixed in 1.9.6 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-32716
  2. 2026-10-03 Alias added: GHSA-w8fp-g9rh-34jh

References

Exploit 1

Patch 1

Advisory 1

Other 2

  • TI-2026-25206 SciTokens vulnerable to SQL Injection in KeyCache CVSS 3.1CRITICAL 9.8
  • TI-2026-25219 SciTokens: Authorization Bypass via Path Traversal in Scope Validation CVSS 3.1HIGH 8.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences