How severe is CVE-2021-30459?

CVE-2021-30459 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2021-30459?

CVE-2021-30459 affects the following packages: django-debug-toolbar (PyPI), django-debug-toolbar (PyPI), django-debug-toolbar (PyPI). Ecosystems affected: PyPI.

How do I fix CVE-2021-30459?

Update django-debug-toolbar to 1.11.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-30459 is resolved across your whole dependency graph.

How do I detect CVE-2021-30459 in my PyPI dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for django-debug-toolbar, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2021-30459 if there is no patch (or I can't update yet)?

Until you can upgrade, make sure every query built from user input uses parameterised statements or a prepared-statement API rather than string concatenation, and reduce the database account's privileges so an injected query cannot read or alter data beyond what the feature needs.

Is CVE-2021-30459 actively exploited in the wild?

No public exploit code has been indexed for CVE-2021-30459 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2021-30459?

CVE-2021-30459 has an EPSS (Exploit Prediction Scoring System) score of 1.9%, placing it in the 80th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2021-30459?

CVE-2021-30459 is classified as SQL Injection (CWE-89). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2021-30459 published, and has it been updated?

CVE-2021-30459 was published on April 14, 2021 and was last updated on August 27, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐍

🐍 PyPI

Not in CISA KEV

CRITICAL severity

CVE-2021-30459 — django-debug-toolbar

CRITICAL

CVE-2021-30459 is a critical-severity (CVSS 9.8) SQL Injection vulnerability in django-debug-toolbar. A fix is available for django-debug-toolbar — see the affected versions and patch details below.

SQL Injection via in django-debug-toolbar

Also known asGHSA-pghf-347x-c2gjPYSEC-2021-10

Published

Apr 14, 2021

Updated

Aug 27, 2026

Affected

3 pkgs

Patched

3 / 3

Exploits

None indexed

Exploitation data as of Oct 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

1.9%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs80th percentile — riskier than 80% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2021-30459 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

3 pkgs affected

🐍django-debug-toolbar🐍django-debug-toolbar🐍django-debug-toolbar

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

Impact

With Django Debug Toolbar attackers are able to execute SQL by changing the raw_sql input of the SQL explain, analyze or select forms and submitting the form.

NOTE: This is a high severity issue for anyone using the toolbar in a production environment.

Generally the Django Debug Toolbar team only maintains the latest version of django-debug-toolbar, but an exception was made because of the high severity of this issue.

Patches

Please upgrade to one of the following versions, depending on the major version you're using:

Version 1.x: django-debug-toolbar 1.11.1
Version 2.x: django-debug-toolbar 2.2.1
Version 3.x: django-debug-toolbar 3.2.1

For more information

If you have any questions or comments about this advisory:

Open an issue in the django-debug-toolbar repo (Please NO SENSITIVE INFORMATION, send an email instead!)
Email us at [email protected]

Affected Packages

3 total 3 fixed

Ecosystem	Package	Vulnerable range	Fix
🐍PyPI	`django-debug-toolbar`	≥ 0.10.0&&< 1.11.1	1.11.1`pip install --upgrade 'django-debug-toolbar==1.11.1'`
🐍PyPI	`django-debug-toolbar`	≥ 2.0a1&&< 2.2.1	2.2.1`pip install --upgrade 'django-debug-toolbar==2.2.1'`
🐍PyPI	`django-debug-toolbar`	≥ 3.0a1&&< 3.2.1	3.2.1`pip install --upgrade 'django-debug-toolbar==3.2.1'`

Affected Products

1 product · 3 configurations

Application

django debug toolbarjazzband

≥ 3.0.0 && < 3.2.1

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for django-debug-toolbar, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update django-debug-toolbar to 1.11.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-30459 is resolved across your whole dependency graph.
Workarounds
Until you can upgrade, make sure every query built from user input uses parameterised statements or a prepared-statement API rather than string concatenation, and reduce the database account's privileges so an injected query cannot read or alter data beyond what the feature needs.

Frequently Asked Questions

### Impact With Django Debug Toolbar attackers are able to execute SQL by changing the `raw_sql` input of the SQL explain, analyze or select forms and submitting the form. **NOTE:** This is a high severity issue for anyone using the toolbar in a **production environment**. Generally the Django Debug Toolbar team only maintains the latest version of django-debug-toolbar, but an exception was made because of the high severity of this issue. ### Patches Please upgrade to one of the following versions, depending on the major version you're using: - Version 1.x: [django-debug-toolbar 1.11.1](ht

O3 Security · Impact-Aware SCA

Is CVE-2021-30459 in your dependencies?

Find it across PyPI, including transitive dependencies.

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CVSS Score

9.8/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Raw vector

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

CWE Classification

CWE-89SQL Injection

Weaponization

No known public exploit tooling found.

OpenSSF Scorecard

Package health score

django-debug-toolbar

7.4/10

Maintained10/10

Code-Review8/10

Branch-Protection0/10

Assessed Oct 5, 2026

Timeline

Disclosed

Apr 14, 2021

Last updated

Aug 27, 2026

Identifiers

CVE-2021-30459

GHSA-pghf-347x-c2gj

PYSEC-2021-10

References

Advisorygithub.com Advisorydjangoproject.com Advisorynvd.nist.gov Fixgithub.com Webcve.mitre.org Webgithub.com Webdjangoproject.com Packagegithub.com

Related vulnerabilities

This CVE is critical severity; 5 of 8 other CVEs with CWE-89 are rated as high or higher (top: critical).

CVE-2026-75513CVE-2026-79752CVE-2026-32599CVE-2026-55416CVE-2026-77635CVE-2026-71867CVE-2026-72811CVE-2026-72807Browse all CWE-89

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedAug 27, 2026

CVE-2021-30459 — django-debug-toolbar

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Impact

Patches

For more information

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2021-30459 in your dependencies?