CVE-2020-25626 — djangorestframework
MEDIUMCVE-2020-25626 is a medium-severity (CVSS 6.1) Improper Input Validation vulnerability in djangorestframework. A fix is available for djangorestframework — see the affected versions and patch details below.
Cross-site Scripting (XSS) in Django REST Framework
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
djangorestframeworkReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
A flaw was found in Django REST Framework versions before 3.12.0 and before 3.11.2. When using the browseable API viewer, Django REST Framework fails to properly escape certain strings that can come from user input. This allows a user who can control those strings to inject malicious <script> tags, leading to a cross-site-scripting (XSS) vulnerability.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | djangorestframework | all versions | 3.11.2pip install --upgrade 'djangorestframework==3.11.2' |
Affected Products
debian linuxdebiandjango rest frameworkencodeceph storageredhatDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for djangorestframework, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update djangorestframework to 3.11.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-25626 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
In Red Hat Ceph Storage 2, python-djangorestframework is embedded in calamari-server. However, calamari-server is no longer supported and will not be fixed.
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat Ansible Tower 3.6 for RHEL 7 | ansible-tower-36/ansible-tower:3.6.6-1 | RHSA-2020:4137 |
| Red Hat Ansible Tower 3.7 for RHEL 7 | ansible-tower-37/ansible-tower-rhel7:3.7.3-1 | RHSA-2020:4136 |
Frequently Asked Questions
Is CVE-2020-25626 in your dependencies?
Find it across PyPI, including transitive dependencies.