CVE-2026-6873 : faille moyenne djangoproject django (CVSS 4.3)

An issue was discovered in Django 6.0 before 6.0.6 and 5.2 before 5.2.15. `django.http.HttpRequest.get_signed_cookie` in Django uses a non-injective salt derivation (concatenating the cookie name and salt argument), which allows a remote attacker to use a cookie in a context different from the one where it was signed, via distinct `(name, salt)` pairs that produce the same concatenation. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Peng Zhou for reporting this issue.

Sévérité

Moyenne (CVSS 4.3)

Vecteur CVSS

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

Exploitation active

Non signalée par la CISA

Publication

3 juin 2026

Dernière mise à jour

21 juil. 2026

• djangoproject django

• Fiche CVE-2026-6873 sur le NVD (NIST)
• docs.djangoproject.com/en/dev/releases/security/
• groups.google.com/g/django-announce
• djangoproject.com/weblog/2026/jun/03/security-releases/