Read the docs
TI-2026-25219 Aliases CVE-2026-32727GHSA-3x2w-63fp-3qvw

SciTokens: Authorization Bypass via Path Traversal in Scope Validation

Priority HIGH 70CWE-22Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

SciTokens is a reference library for generating and using SciTokens. Prior to version 1.9.7, the Enforcer is vulnerable to a path traversal attack where an attacker can use dot-dot (..) in the scope claim of a token to escape the intended directory restriction. This occurs because the library normalizes both the authorized path (from the token) and the requested path (from the application) before comparing them using startswith. This issue has been patched in version 1.9.7.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00525 44th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed scitokens (scitokens): 1.9.7scitokens (PyPI): 1.9.7

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 1.9.71.9.7Patch availableCNA
—scitokens (PyPI)before 1.9.71.9.7Patch availableGHSA-3x2w-63fp-3qvw
  • scitokens Vendorscitokens Affected before 1.9.7 Fixed in 1.9.7 Patch available CNA
  • scitokens (PyPI) Vendor— Affected before 1.9.7 Fixed in 1.9.7 Patch available GHSA-3x2w-63fp-3qvw

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:scitokens:scitokens_library:*:*:*:*:*:*:*:*before 1.9.7Vulnerablescitokens
  • cpe:2.3:a:scitokens:scitokens_library:*:*:*:*:*:*:*:* Versions before 1.9.7 Vulnerable ·scitokens

Remediation

  • Fix · CNA scitokens (scitokens) Fixed in 1.9.7
  • Fix · GHSA-3x2w-63fp-3qvw scitokens (PyPI) Fixed in 1.9.7 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-2026-32727
  2. 2026-10-03 Alias added: GHSA-3x2w-63fp-3qvw

References

Exploit 1

Patch 1

Advisory 1

Other 3

  • TI-2026-25206 SciTokens vulnerable to SQL Injection in KeyCache CVSS 3.1CRITICAL 9.8
  • TI-2026-25208 SciTokens: Authorization Bypass via Incorrect Scope Path Prefix Checking CVSS 3.1HIGH 8.1

Sources

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