What’s Vulnerable › Vulnerabilities

CVE-2024-21543

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-12-13 · updated 2026-06-17
• Weakness: CWE-287

Description

Versions of the package djoser before 2.3.0 are vulnerable to Authentication Bypass when the authenticate() function fails. This is because the system falls back to querying the database directly, granting access to users with valid credentials, and eventually bypassing custom authentication checks such as two-factor authentication, LDAP validations, or requirements from configured AUTHENTICATION_BACKENDS.

Affected products

• djoser: before 2.3.0 — fixed in 2.3.0

How to fix

Upgrade to a fixed version: djoser 2.3.0. Check the vendor advisory for mitigations.

References

• https://github.com/sunscrapers/djoser/commit/d33c3993c0c735f23cbedc60fa59fce69354f19d
• https://github.com/sunscrapers/djoser/issues/795
• https://github.com/sunscrapers/djoser/pull/819
• https://github.com/sunscrapers/djoser/releases/tag/2.3.0
• https://security.snyk.io/vuln/SNYK-PYTHON-DJOSER-8366540
• https://lists.debian.org/debian-lts-announce/2025/02/msg00023.html

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