CVE-2026-71240: Open Redirect (CVSS 4.3)

Description

DjangoCRM's toggle_default_sorting view is the only route in common/urls.py that is not wrapped in login_required or staff_member_required, and it redirects to a caller-supplied next_url GET parameter after only checking secure_url(next_url), which merely verifies the target host matches the current site's domain (blocking only cross-domain redirects) while allowing any same-site path with no authentication required to reach the view. This enables unauthenticated phishing redirects and referrer-based token leakage via redirect chains.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Weakness Type (CWE)

CWE-601 CWE-601

References

Other References

https://github.com/DjangoCRM/django-crm

Frequently Asked Questions

What is CVE-2026-71240? +

DjangoCRM's toggle_default_sorting view is the only route in common/urls.py that is not wrapped in login_required or staff_member_required, and it redirects to a caller-supplied next_url GET parameter after only checking secure_url(next_url), which merely verifies the target host matches the current site's domain (blocking only cross-domain redirects) while allowing any same-site path with no authentication required to reach the view. This enables unauthenticated phishing redirects and referrer-based token leakage via redirect chains. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-71240? +

CVE-2026-71240 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2026-71240? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-71240