PatchTheCVECVE-2020-15225: django-filter is a generic system for filtering Django QuerySets based on user selections
CVE-2020-15225 is a high-severity flaw (CVSS 7.5) affecting django-filter, fedora. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
django-filter is a generic system for filtering Django QuerySets based on user selections. In django-filter before version 2.4.0, automatically generated `NumberFilter` instances, whose value was later converted to an integer, were subject to potential DoS from maliciously input using exponential format with sufficiently large exponents. Version 2.4.0+ applies a `MaxValueValidator` with a a default `limit_value` of 1e50 to the form field used by
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.8% (top 22%) |
| CISA exploited list | No |
| Weakness | CWE-681 |
| Published | 2021-04-29 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2020-15225?
django-filter: upgrade to 2.4.0; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2020-15225 being exploited?
CVE-2020-15225 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2020-15225 affect?
CVE-2020-15225 affects django-filter, fedora. Severity is high (CVSS 7.5). django-filter is a generic system for filtering Django QuerySets based on user selections. In django-filter before version 2.4.0, automatically generated `NumberFilter` instances, whose value was later converted to an integer, were subject
How urgent is CVE-2020-15225?
Priority 51/100. High severity; Remotely exploitable, no login, no user action