CVE-2021-46898: Django grappelli Django Grappelli Open Redirect Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-9x43-5qcq-h79q
Share
CVSS 6.1
CWE-601
Published
Advisory Summary

CVE-2021-46898 is a MODERATE (CVSS 6.1) django grappelli open redirect vulnerability vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting Django grappelli libraries in the PyPI ecosystem. The issue involves django grappelli open redirect vulnerability. Remediation is available by upgrading affected packages to version 2.15.2.

CVE-2021-46898 at a Glance

CVE Identifier CVE-2021-46898
GHSA Identifier GHSA-9x43-5qcq-h79q
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Affected Product Django grappelli
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2021-46898

To remediate this vulnerability, upgrade all affected Django grappelli dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

django-grappelli fixed: 2.15.2 
pip install django-grappelli>=2.15.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show django-grappelli

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2021-46898, inspect your installed packages using pip:

pip show django-grappelli

Analyze the terminal output to locate any version of Django grappelli in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.15.2), your application is affected.

Note: The pip show django-grappelli command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect'), where the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. In Django grappelli, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

views/switch.py in django-grappelli (aka Django Grappelli) before 2.15.2 attempts to prevent external redirection with startswith("/") but this does not consider a protocol-relative URL (e.g., //example.com) attack.

CVE-2021-46898 Affected Django grappelli Versions

1 component(s)
Fixed Versions:
2.15.2
Product / Package Ecosystem Affected Versions Fixed Version
django-grappelli
pypi/django-grappelli
PyPI
< 2.15.2
2.15.2

References

NVD — CVE-2021-46898 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-46898
Django grappelli Source Repository REPOSITORY
https://github.com/sehmaschine/django-grappelli/issues/975
Django grappelli Source Repository REPOSITORY
https://github.com/sehmaschine/django-grappelli/pull/976
Security Fix Commit FIX COMMIT
https://github.com/sehmaschine/django-grappelli/commit/4ca94bcda0fa2720594506853d85e00c8212968f
Django grappelli Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/django-grappelli/PYSEC-2023-211.yaml
Django grappelli Source Repository REPOSITORY
https://github.com/sehmaschine/django-grappelli
Django grappelli Source Repository REPOSITORY
https://github.com/sehmaschine/django-grappelli/compare/2.15.1...2.15.2

Frequently Asked Questions

What is CVE-2021-46898?
CVE-2021-46898 is a security vulnerability in Django grappelli involving Django Grappelli Open Redirect vulnerability under CWE-601: URL Redirection to Untrusted Site ('Open Redirect').
Which Django grappelli versions are affected?
Affected versions include releases prior to 2.15.2 across affected packages: django-grappelli.
What version fixes CVE-2021-46898?
Upgrading to 2.15.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is django-grappelli affected?
Yes, django-grappelli is affected in releases prior to 2.15.2. Upgrade your dependency to 2.15.2 or later.
What is the CVSS score of CVE-2021-46898?
CVE-2021-46898 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2021-46898?
CVE-2021-46898 is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect') (The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.).
How can I check PyPI dependencies for CVE-2021-46898?
Run the dependency tree command: 'pip show django-grappelli'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9x43-5qcq-h79q",
  "modified" : "2024-09-13T20:12:08Z",
  "published" : "2023-10-22T21:36:10Z",
  "aliases" : [ "CVE-2021-46898" ],
  "summary" : "Django Grappelli Open Redirect vulnerability",
  "details" : "views/switch.py in django-grappelli (aka Django Grappelli) before 2.15.2 attempts to prevent external redirection with startswith(\"/\") but this does not consider a protocol-relative URL (e.g., //example.com) attack.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "django-grappelli"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.15.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-46898"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sehmaschine/django-grappelli/issues/975"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sehmaschine/django-grappelli/pull/976"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sehmaschine/django-grappelli/commit/4ca94bcda0fa2720594506853d85e00c8212968f"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/django-grappelli/PYSEC-2023-211.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/sehmaschine/django-grappelli"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sehmaschine/django-grappelli/compare/2.15.1...2.15.2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-601" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-10-24T01:46:26Z",
    "nvd_published_at" : "2023-10-22T19:15:08Z"
  }
}