CVE-2015-3982 Django allows user sessions hijacking via an empty string in the session key

What is CVE-2015-3982?

CVE-2015-3982 is a medium-severity authentication bypass vulnerability in Djangoproject Django, published on 2 Jun 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The session.flush function in the cached_db backend in Django 1.8.x before 1.8.2 does not properly flush the session, which allows remote attackers to hijack user sessions via an empty string in the session key.

Which versions are affected by CVE-2015-3982?

3 open source packages ship an affected version, including django and Django. It affects 1 product.

Products include Djangoproject Django.

How do I fix CVE-2015-3982?

Upgrade django to 1.8.2 or later.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2015-3982 being exploited?

There is no known exploitation of CVE-2015-3982 in the wild and no public exploit code.

Other vulnerabilities in Djangoproject Django

• CVE-2026-4277 Privilege abuse in GenericInlineModelAdmin Critical 9.8
• CVE-2024-53908 Django SQL injection in HasKey(lhs, rhs) on Oracle Critical 9.8
• CVE-2024-42005 Django SQL injection vulnerability Critical 9.8
• CVE-2023-31047 Django bypasses validation when using one form field to upload multiple files Critical 9.8
• CVE-2022-34265 Django `Trunc()` and `Extract()` database functions vulnerable to SQL Injection Critical 9.8

All Djangoproject Django vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-6wgp-fwfm-mxp3, PYSEC-2015-19.