PatchTheCVECVE-2020-4071: In django-basic-auth-ip-whitelist before 0.3.4, a potential timing attack exists on websites where the basic a
CVE-2020-4071 is a low-severity flaw (CVSS 2.2) affecting django-basic-auth-ip-whitelist. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
In django-basic-auth-ip-whitelist before 0.3.4, a potential timing attack exists on websites where the basic authentication is used or configured, i.e. BASIC_AUTH_LOGIN and BASIC_AUTH_PASSWORD is set. Currently the string comparison between configured credentials and the ones provided by users is performed through a character-by-character string comparison. This enables a possibility that attacker may time the time it takes the server to validate
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 2.2 (Low) |
| Attack vector | Physical |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 70%) |
| CISA exploited list | No |
| Weakness | CWE-208 |
| Published | 2020-06-24 |
| 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-2020-4071?
django-basic-auth-ip-whitelist: upgrade to 0.3.4. Exact commands for each OS are on this page.
Is CVE-2020-4071 being exploited?
CVE-2020-4071 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-2020-4071 affect?
CVE-2020-4071 affects django-basic-auth-ip-whitelist. Severity is low (CVSS 2.2). In django-basic-auth-ip-whitelist before 0.3.4, a potential timing attack exists on websites where the basic authentication is used or configured, i.e. BASIC_AUTH_LOGIN and BASIC_AUTH_PASSWORD is set. Currently the string comparison between
How urgent is CVE-2020-4071?
Priority 15/100. No elevated risk signals yet.