CVE-2025-47942 Learners on edX Platform can download python_lib.zip
Learners can download python_lib.zip containing custom grading code or answers due to missing access controls in the Open edX Platform.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-47942?
CVE-2025-47942 is a medium-severity missing authorization vulnerability in openedx edx-platform, published on 21 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2025-47942?
How do I fix CVE-2025-47942?
No fix has been published for CVE-2025-47942 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-47942 being exploited?
There is no known exploitation of CVE-2025-47942 in the wild and no public exploit code.
Sources
Also known as GHSA-x5cm-2hpq-pw57.